Best-known CA bounds for t=4, v=20
| k | N | Array | Method / Source |
|---|---|---|---|
| 5 | 160000 | Derive from strength 5 | |
| 6 | 176457 | Augment OA | |
| 7 | 184894 | Augment OA | |
| 8 | 193330 | Augment OA | |
| 9 | 201702 | Augment OA | |
| 10 | 210060 | Augment OA | |
| 11 | 218257 | Augment OA | |
| 12 | 226349 | Augment OA | |
| 13 | 234126 | Augment OA | |
| 14 | 241705 | Augment OA | |
| 15 | 248844 | Augment OA | |
| 16 | 255602 | Augment OA | |
| 17 | 261875 | Augment OA | |
| 18 | 267676 | Augment OA | |
| 19 | 272911 | Augment OA | |
| 20 | 277535 | Augment OA | |
| 24 | 279834 | orthogonal array fuse fuse fuse postop NCK | |
| 25 | 390604 | orthogonal array fuse fuse fuse fuse fuse postop NCK | |
| 26 | 390610 | orthogonal array fuse fuse fuse fuse fuse postop NCK | |
| 27 | 528229 | orthogonal array fuse fuse fuse fuse fuse fuse fuse postop NCK | |
| 28 | 528696 | orthogonal array fuse fuse fuse fuse fuse fuse fuse postop NCK | |
| 30 | 547509 | 3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 39 | 559147 | 2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 40 | 629264 | Colbourn-Martirosyan-TVT-Walker | |
| 42 | 668043 | Colbourn-Martirosyan-TVT-Walker | |
| 44 | 668233 | Colbourn-Martirosyan-TVT-Walker | |
| 46 | 668461 | Colbourn-Martirosyan-TVT-Walker | |
| 48 | 668727 | Colbourn-Martirosyan-TVT-Walker | |
| 86 | 827327 | 3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 98 | 838965 | 2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 107 | 839515 | CPHF IPO 3 (WCS) fuse fuse fuse | |
| 108 | 1042023 | Colbourn-Martirosyan-TVT-Walker | |
| 110 | 1044187 | Colbourn-Martirosyan-TVT-Walker | |
| 115 | 1044415 | Colbourn-Martirosyan-TVT-Walker | |
| 120 | 1044681 | Colbourn-Martirosyan-TVT-Walker | |
| 170 | 1095001 | 3,3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 203 | 1106639 | 3,2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 204 | 1107145 | 3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 238 | 1118277 | 2,2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 242 | 1118783 | 2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 247 | 1119289 | SCPHF Random Extension (CLS) fuse fuse fuse | |
| 302 | 1119355 | CPHF IPO 4 (WCS) fuse fuse fuse | |
| 312 | 1228543 | Colbourn-Martirosyan-TVT-Walker | |
| 336 | 1243071 | Colbourn-Martirosyan-TVT-Walker | |
| 360 | 1255341 | Colbourn-Martirosyan-TVT-Walker | |
| 384 | 1262099 | Colbourn-Martirosyan-TVT-Walker | |
| 391 | 1272816 | Colbourn-Martirosyan-TVT-Walker | |
| 408 | 1277027 | Colbourn-Martirosyan-TVT-Walker | |
| 414 | 1278620 | Colbourn-Martirosyan-TVT-Walker | |
| 432 | 1282831 | Colbourn-Martirosyan-TVT-Walker | |
| 437 | 1289199 | Colbourn-Martirosyan-TVT-Walker | |
| 456 | 1293410 | Colbourn-Martirosyan-TVT-Walker | |
| 460 | 1301059 | Colbourn-Martirosyan-TVT-Walker | |
| 480 | 1305270 | Colbourn-Martirosyan-TVT-Walker | |
| 506 | 1353539 | Colbourn-Martirosyan-TVT-Walker | |
| 529 | 1353541 | Colbourn-Martirosyan-TVT-Walker | |
| 552 | 1386406 | Colbourn-Martirosyan-TVT-Walker fuse fuse | |
| 593 | 1398095 | 2,2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 610 | 1398601 | 2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 619 | 1399107 | SCPHF Random Extension (CLS) fuse fuse fuse | |
| 658 | 1399195 | CPHF IPO 5 (WCS) fuse fuse fuse | |
| 895 | 1642493 | 3,3,3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 1039 | 1654637 | 3,3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 1231 | 1666275 | 3,2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 1247 | 1666781 | 3-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 1305 | 1677913 | 2,2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 1380 | 1678419 | 2-Restricted SCPHF RE (CL) fuse fuse fuse | |
| 1421 | 1678925 | SCPHF Random Extension (CLS) fuse fuse fuse | |
| 1461 | 1679035 | CPHF Random Extension (CLS) fuse fuse fuse | |
| 2723 | 1958743 | SCPHF Random Extension (CLS) fuse fuse fuse | |
| 2806 | 1958875 | CPHF Random Extension (CLS) fuse fuse fuse | |
| 2807 | 2436915 | Add a factor | |
| 3020 | 2531727 | Colbourn-Martirosyan-TVT-Walker | |
| 3322 | 2539926 | Colbourn-Martirosyan-TVT-Walker | |
| 3624 | 2578798 | Colbourn-Martirosyan-TVT-Walker | |
| 3926 | 2596835 | Colbourn-Martirosyan-TVT-Walker | |
| 4228 | 2611363 | Colbourn-Martirosyan-TVT-Walker | |
| 4530 | 2628763 | Colbourn-Martirosyan-TVT-Walker | |
| 4832 | 2635521 | Colbourn-Martirosyan-TVT-Walker | |
| 5134 | 2647157 | Colbourn-Martirosyan-TVT-Walker | |
| 5436 | 2652961 | Colbourn-Martirosyan-TVT-Walker | |
| 5738 | 2663540 | Colbourn-Martirosyan-TVT-Walker | |
| 6040 | 2675400 | Colbourn-Martirosyan-TVT-Walker | |
| 6946 | 2724893 | Colbourn-Martirosyan-TVT-Walker fuse fuse fuse | |
| 7248 | 2772890 | Colbourn-Martirosyan-TVT-Walker fuse fuse | |
| 7296 | 2806284 | Colbourn-Martirosyan-TVT-Walker | |
| 7344 | 2810633 | Colbourn-Martirosyan-TVT-Walker | |
| 7452 | 2812226 | Colbourn-Martirosyan-TVT-Walker | |
| 7776 | 2816437 | Colbourn-Martirosyan-TVT-Walker | |
| 7866 | 2822805 | Colbourn-Martirosyan-TVT-Walker | |
| 8208 | 2827016 | Colbourn-Martirosyan-TVT-Walker | |
| 8303 | 2833384 | Colbourn-Martirosyan-TVT-Walker | |
| 8531 | 2837595 | Colbourn-Martirosyan-TVT-Walker | |
| 8550 | 2838040 | Colbourn-Martirosyan-TVT-Walker | |
| 8588 | 2838043 | Colbourn-Martirosyan-TVT-Walker | |
| 8640 | 2838876 | Colbourn-Martirosyan-TVT-Walker | |
| 8664 | 2844827 | Colbourn-Martirosyan-TVT-Walker | |
| 8740 | 2845244 | Colbourn-Martirosyan-TVT-Walker | |
| 9120 | 2849455 | Colbourn-Martirosyan-TVT-Walker | |
| 9140 | 2857104 | Colbourn-Martirosyan-TVT-Walker | |
| 9160 | 2857553 | Colbourn-Martirosyan-TVT-Walker | |
| 9200 | 2857560 | Colbourn-Martirosyan-TVT-Walker | |
| 9280 | 2861771 | Colbourn-Martirosyan-TVT-Walker | |
| 9440 | 2865439 | Colbourn-Martirosyan-TVT-Walker | |
| 9520 | 2867285 | Colbourn-Martirosyan-TVT-Walker | |
| 9600 | 2871001 | Colbourn-Martirosyan-TVT-Walker | |
| 9936 | 2891358 | Colbourn-Martirosyan-TVT-Walker | |
| 10000 | 2897726 | Colbourn-Martirosyan-TVT-Walker |
Checkmark key: ✓ array available (verified) · ✓ array available (unverified)