The fields in the following table are all straightforward. The parameters are given in the standard (n,k,a,c) fashion. The eigenvalues of the adjacency matrix are called theta and tau with respective multiplicities m_theta and m_tau .
The Number field (will eventually) give some indication of the number of graphs known, the Type field indicates if the graph is a conference graph or a Smith graph (one of the Krein conditions is tight). Any further comments will be linked into the final column.
| Parameters | theta | m_theta | tau | m_tau | Number | Type | Comments |
|---|---|---|---|---|---|---|---|
| (400, 21, 2, 1) | 5 | 175 | -4 | 224 | ? | none yet | |
| (400, 38, 18, 2) | 18 | 38 | -2 | 361 | ? | none yet | |
| (400, 56, 6, 8) | 6 | 224 | -8 | 175 | ? | none yet | |
| (400, 57, 20, 6) | 17 | 57 | -3 | 342 | ? | none yet | |
| (400, 76, 24, 12) | 16 | 76 | -4 | 323 | ? | none yet | |
| (400, 84, 8, 20) | 4 | 315 | -16 | 84 | ? | none yet | |
| (400, 95, 30, 20) | 15 | 95 | -5 | 304 | ? | none yet | |
| (400, 105, 20, 30) | 5 | 294 | -15 | 105 | ? | none yet | |
| (400, 114, 38, 30) | 14 | 114 | -6 | 285 | ? | none yet | |
| (400, 126, 34, 42) | 6 | 273 | -14 | 126 | ? | none yet | |
| (400, 133, 42, 45) | 8 | 224 | -11 | 175 | ? | none yet | |
| (400, 133, 48, 42) | 13 | 133 | -7 | 266 | ? | none yet | |
| (400, 147, 50, 56) | 7 | 252 | -13 | 147 | ? | none yet | |
| (400, 152, 60, 56) | 12 | 152 | -8 | 247 | ? | none yet | |
| (400, 156, 74, 52) | 26 | 48 | -4 | 351 | ? | none yet | |
| (400, 168, 68, 72) | 8 | 231 | -12 | 168 | ? | none yet | |
| (400, 171, 74, 72) | 11 | 171 | -9 | 228 | ? | none yet | |
| (400, 189, 88, 90) | 9 | 210 | -11 | 189 | ? | none yet | |
| (400, 190, 90, 90) | 10 | 190 | -10 | 209 | ? | none yet | |
| (401, 200, 99, 100) | 9.512 | 200 | -10.512 | 200 | ? | Conf. | none yet |
| (405, 96, 18, 24) | 6 | 264 | -12 | 140 | ? | none yet | |
| (405, 132, 63, 33) | 33 | 30 | -3 | 374 | ? | none yet | |
| (405, 196, 91, 98) | 7 | 260 | -14 | 144 | ? | none yet | |
| (405, 202, 100, 101) | 9.562 | 202 | -10.562 | 202 | ? | Conf. | none yet |
| (406, 54, 27, 4) | 25 | 28 | -2 | 377 | ? | none yet | |
| (406, 108, 30, 28) | 10 | 174 | -8 | 231 | ? | none yet | |
| (406, 165, 68, 66) | 11 | 174 | -9 | 231 | ? | none yet | |
| (406, 189, 84, 91) | 7 | 261 | -14 | 144 | ? | none yet | |
| (406, 195, 96, 91) | 13 | 145 | -8 | 260 | ? | none yet | |
| (407, 126, 45, 36) | 15 | 110 | -6 | 296 | ? | none yet | |
| (408, 110, 28, 30) | 8 | 220 | -10 | 187 | ? | none yet | |
| (408, 176, 70, 80) | 6 | 288 | -16 | 119 | ? | none yet | |
| (409, 204, 101, 102) | 9.612 | 204 | -10.612 | 204 | ? | Conf. | none yet |
| (411, 130, 45, 39) | 13 | 137 | -7 | 273 | ? | none yet | |
| (413, 112, 36, 28) | 14 | 118 | -6 | 294 | ? | none yet | |
| (414, 63, 12, 9) | 9 | 161 | -6 | 252 | ? | none yet | |
| (416, 100, 36, 20) | 20 | 65 | -4 | 350 | ? | none yet | |
| (416, 165, 64, 66) | 9 | 220 | -11 | 195 | ? | none yet | |
| (418, 147, 56, 49) | 14 | 132 | -7 | 285 | ? | none yet | |
| (421, 210, 104, 105) | 9.759 | 210 | -10.759 | 210 | ? | Conf. | none yet |
| (424, 99, 26, 22) | 11 | 159 | -7 | 264 | ? | none yet | |
| (425, 72, 27, 9) | 21 | 50 | -3 | 374 | ? | none yet | |
| (425, 160, 60, 60) | 10 | 204 | -10 | 220 | ? | none yet | |
| (425, 212, 105, 106) | 9.808 | 212 | -10.808 | 212 | ? | Conf. | none yet |
| (428, 112, 21, 32) | 5 | 320 | -16 | 107 | ? | none yet | |
| (429, 108, 27, 27) | 9 | 208 | -9 | 220 | ? | none yet | |
| (430, 39, 8, 3) | 9 | 129 | -4 | 300 | ? | none yet | |
| (430, 135, 36, 45) | 6 | 300 | -15 | 129 | ? | none yet | |
| (430, 165, 68, 60) | 15 | 129 | -7 | 300 | ? | none yet | |
| (433, 216, 107, 108) | 9.904 | 216 | -10.904 | 216 | ? | Conf. | none yet |
| (435, 56, 28, 4) | 26 | 29 | -2 | 405 | ? | none yet | |
| (435, 154, 53, 55) | 9 | 231 | -11 | 203 | ? | none yet | |
| (435, 182, 73, 78) | 8 | 260 | -13 | 174 | ? | none yet | |
| (437, 100, 15, 25) | 5 | 322 | -15 | 114 | ? | none yet | |
| (438, 92, 31, 16) | 19 | 72 | -4 | 365 | ? | none yet | |
| (441, 40, 19, 2) | 19 | 40 | -2 | 400 | ? | none yet | |
| (441, 56, 7, 7) | 7 | 216 | -7 | 224 | ? | none yet | |
| (441, 60, 21, 6) | 18 | 60 | -3 | 380 | ? | none yet | |
| (441, 80, 25, 12) | 17 | 80 | -4 | 360 | ? | none yet | |
| (441, 88, 7, 20) | 4 | 352 | -17 | 88 | ? | none yet | |
| (441, 88, 35, 13) | 25 | 44 | -3 | 396 | ? | none yet | |
| (441, 100, 31, 20) | 16 | 100 | -5 | 340 | ? | none yet | |
| (441, 110, 19, 30) | 5 | 330 | -16 | 110 | ? | none yet | |
| (441, 120, 39, 30) | 15 | 120 | -6 | 320 | ? | none yet | |
| (441, 132, 33, 42) | 6 | 308 | -15 | 132 | ? | none yet | |
| (441, 140, 49, 42) | 14 | 140 | -7 | 300 | ? | none yet | |
| (441, 152, 43, 57) | 5 | 342 | -19 | 98 | ? | none yet | |
| (441, 154, 49, 56) | 7 | 286 | -14 | 154 | ? | none yet | |
| (441, 160, 61, 56) | 13 | 160 | -8 | 280 | ? | none yet | |
| (441, 176, 67, 72) | 8 | 264 | -13 | 176 | ? | none yet | |
| (441, 176, 85, 60) | 29 | 48 | -4 | 392 | ? | none yet | |
| (441, 180, 75, 72) | 12 | 180 | -9 | 260 | ? | none yet | |
| (441, 184, 87, 69) | 23 | 72 | -5 | 368 | ? | none yet | |
| (441, 190, 89, 76) | 19 | 98 | -6 | 342 | ? | none yet | |
| (441, 198, 87, 90) | 9 | 242 | -12 | 198 | ? | none yet | |
| (441, 200, 91, 90) | 11 | 200 | -10 | 240 | ? | none yet | |
| (441, 220, 95, 124) | 3 | 396 | -32 | 44 | ? | none yet | |
| (441, 220, 109, 110) | 10.000 | 220 | -11.000 | 220 | ? | Conf. | none yet |
| (441, 220, 123, 96) | 31 | 44 | -4 | 396 | ? | none yet | |
| (442, 210, 99, 100) | 10 | 221 | -11 | 220 | ? | none yet | |
| (445, 222, 110, 111) | 10.048 | 222 | -11.048 | 222 | ? | Conf. | none yet |
| (448, 150, 50, 50) | 10 | 216 | -10 | 231 | ? | none yet | |
| (448, 162, 66, 54) | 18 | 105 | -6 | 342 | ? | none yet | |
| (449, 224, 111, 112) | 10.095 | 224 | -11.095 | 224 | ? | Conf. | none yet |
| (451, 130, 33, 39) | 7 | 286 | -13 | 164 | ? | none yet | |
| (451, 156, 57, 52) | 13 | 164 | -8 | 286 | ? | none yet | |
| (456, 65, 10, 9) | 8 | 208 | -7 | 247 | ? | none yet | |
| (456, 80, 4, 16) | 4 | 360 | -16 | 95 | ? | none yet | |
| (456, 104, 22, 24) | 8 | 247 | -10 | 208 | ? | none yet | |
| (456, 130, 24, 42) | 4 | 380 | -22 | 75 | ? | none yet | |
| (456, 140, 40, 44) | 8 | 266 | -12 | 189 | ? | none yet | |
| (456, 140, 58, 36) | 26 | 56 | -4 | 399 | ? | none yet | |
| (456, 175, 78, 60) | 23 | 75 | -5 | 380 | ? | none yet | |
| (456, 182, 73, 72) | 11 | 208 | -10 | 247 | ? | none yet | |
| (456, 195, 74, 90) | 5 | 360 | -21 | 95 | ? | none yet | |
| (457, 228, 113, 114) | 10.189 | 228 | -11.189 | 228 | ? | Conf. | none yet |
| (459, 208, 82, 104) | 4 | 390 | -26 | 68 | ? | none yet | |
| (460, 85, 18, 15) | 10 | 184 | -7 | 275 | ? | none yet | |
| (460, 99, 18, 22) | 7 | 275 | -11 | 184 | ? | none yet | |
| (460, 147, 42, 49) | 7 | 299 | -14 | 160 | ? | none yet | |
| (460, 153, 32, 60) | 3 | 414 | -31 | 45 | ? | none yet | |
| (460, 204, 78, 100) | 4 | 391 | -26 | 68 | ? | none yet | |
| (460, 216, 116, 88) | 32 | 45 | -4 | 414 | ? | none yet | |
| (460, 225, 120, 100) | 25 | 69 | -5 | 390 | ? | none yet | |
| (461, 230, 114, 115) | 10.235 | 230 | -11.235 | 230 | ? | Conf. | none yet |
| (465, 58, 29, 4) | 27 | 30 | -2 | 434 | ? | none yet | |
| (465, 144, 43, 45) | 9 | 248 | -11 | 216 | ? | none yet | |
| (465, 192, 72, 84) | 6 | 340 | -18 | 124 | ? | none yet | |
| (470, 126, 27, 36) | 6 | 329 | -15 | 140 | ? | none yet | |
| (474, 165, 52, 60) | 7 | 315 | -15 | 158 | ? | none yet | |
| (475, 90, 25, 15) | 15 | 114 | -5 | 360 | ? | none yet | |
| (475, 96, 32, 16) | 20 | 75 | -4 | 399 | ? | none yet | |
| (476, 133, 42, 35) | 14 | 152 | -7 | 323 | ? | none yet | |
| (476, 133, 60, 28) | 35 | 34 | -3 | 441 | ? | none yet | |
| (477, 140, 31, 45) | 5 | 371 | -19 | 105 | ? | none yet | |
| (477, 168, 57, 60) | 9 | 264 | -12 | 212 | ? | none yet | |
| (477, 238, 118, 119) | 10.420 | 238 | -11.420 | 238 | ? | Conf. | none yet |
| (481, 240, 119, 120) | 10.466 | 240 | -11.466 | 240 | ? | Conf. | none yet |
| (483, 240, 118, 120) | 10 | 252 | -12 | 230 | ? | none yet | |
| (484, 42, 20, 2) | 20 | 42 | -2 | 441 | ? | none yet | |
| (484, 63, 22, 6) | 19 | 63 | -3 | 420 | ? | none yet | |
| (484, 84, 26, 12) | 18 | 84 | -4 | 399 | ? | none yet | |
| (484, 92, 6, 20) | 4 | 391 | -18 | 92 | ? | none yet | |
| (484, 105, 14, 25) | 5 | 363 | -16 | 120 | ? | none yet | |
| (484, 105, 32, 20) | 17 | 105 | -5 | 378 | ? | none yet | |
| (484, 115, 18, 30) | 5 | 368 | -17 | 115 | ? | none yet | |
| (484, 126, 40, 30) | 16 | 126 | -6 | 357 | ? | none yet | |
| (484, 138, 32, 42) | 6 | 345 | -16 | 138 | ? | none yet | |
| (484, 138, 47, 36) | 17 | 120 | -6 | 363 | ? | none yet | |
| (484, 147, 50, 42) | 15 | 147 | -7 | 336 | ? | none yet | |
| (484, 161, 48, 56) | 7 | 322 | -15 | 161 | ? | none yet | |
| (484, 168, 62, 56) | 14 | 168 | -8 | 315 | ? | none yet | |
| (484, 184, 66, 72) | 8 | 299 | -14 | 184 | ? | none yet | |
| (484, 189, 76, 72) | 13 | 189 | -9 | 294 | ? | none yet | |
| (484, 207, 86, 90) | 9 | 276 | -13 | 207 | ? | none yet | |
| (484, 210, 92, 90) | 12 | 210 | -10 | 273 | ? | none yet | |
| (484, 230, 108, 110) | 10 | 253 | -12 | 230 | ? | none yet | |
| (484, 231, 110, 110) | 11 | 231 | -11 | 252 | ? | none yet | |
| (485, 242, 120, 121) | 10.511 | 242 | -11.511 | 242 | ? | Conf. | none yet |
| (486, 97, 16, 20) | 7 | 291 | -11 | 194 | ? | none yet | |
| (486, 100, 22, 20) | 10 | 210 | -8 | 275 | ? | none yet | |
| (486, 165, 36, 66) | 3 | 440 | -33 | 45 | ? | Smith | none yet |
| (486, 194, 67, 84) | 5 | 388 | -22 | 97 | ? | none yet | |
| (486, 210, 99, 84) | 21 | 100 | -6 | 385 | ? | none yet | |
| (490, 144, 28, 48) | 4 | 414 | -24 | 75 | ? | none yet | |
| (490, 165, 56, 55) | 11 | 225 | -10 | 264 | ? | none yet | |
| (490, 192, 92, 64) | 32 | 49 | -4 | 440 | ? | none yet | |
| (493, 246, 122, 123) | 10.602 | 246 | -11.602 | 246 | ? | Conf. | none yet |
| (494, 85, 12, 15) | 7 | 285 | -10 | 208 | ? | none yet | |
| (495, 38, 1, 3) | 5 | 285 | -7 | 209 | ? | none yet | |
| (495, 78, 29, 9) | 23 | 54 | -3 | 440 | ? | none yet | |
| (495, 104, 28, 20) | 14 | 143 | -6 | 351 | ? | none yet | |
| (495, 190, 53, 85) | 3 | 450 | -35 | 44 | ? | none yet | |
| (495, 190, 85, 65) | 25 | 76 | -5 | 418 | ? | none yet | |
| (495, 208, 86, 88) | 10 | 260 | -12 | 234 | ? | none yet | |
| (495, 234, 93, 126) | 3 | 450 | -36 | 44 | ? | none yet | |
| (495, 238, 109, 119) | 7 | 340 | -17 | 154 | ? | none yet | |
| (496, 54, 4, 6) | 6 | 279 | -8 | 216 | ? | none yet | |
| (496, 60, 30, 4) | 28 | 31 | -2 | 464 | ? | none yet | |
| (496, 110, 18, 26) | 6 | 341 | -14 | 154 | ? | none yet | |
| (496, 135, 38, 36) | 11 | 216 | -9 | 279 | ? | none yet | |
| (496, 198, 80, 78) | 12 | 216 | -10 | 279 | ? | none yet | |
| (496, 231, 102, 112) | 7 | 341 | -17 | 154 | ? | none yet | |
| (496, 240, 120, 112) | 16 | 155 | -8 | 340 | ? | none yet | |
| (497, 186, 55, 78) | 4 | 426 | -27 | 70 | ? | none yet | |
| (497, 240, 127, 105) | 27 | 70 | -5 | 426 | ? | none yet | |
| (498, 161, 64, 46) | 23 | 83 | -5 | 414 | ? | none yet |