This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 16 |
| 4 | 216 |
| 5 | 1584 |
| 6 | 8096 |
| 7 | 32256 |
| 8 | 106992 |
| 9 | 308352 |
| 10 | 795168 |
| 11 | 1873872 |
| 12 | 4098952 |
| 13 | 8422128 |
| 14 | 16406208 |
| 15 | 30522752 |
| 16 | 54556128 |
| 17 | 94140288 |
| 18 | 157458624 |
| 19 | 256141584 |
| 20 | 406401336 |
| 21 | 630447664 |
| 22 | 958234464 |
| 23 | 1429591680 |
| 24 | 2096803280 |
| 25 | 3027697920 |
| 26 | 4309325280 |
| 27 | 6052297680 |
| 28 | 8395883496 |
| 29 | 11513946096 |
| 30 | 15621829504 |
| 31 | 20984299776 |
| 32 | 27924659136 |
| 33 | 36835158272 |
| 34 | 48188840832 |