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) |
|---|---|
| 5 | 0 |
| 6 | 0 |
| 7 | 9 |
| 8 | 153 |
| 9 | 972 |
| 10 | 3996 |
| 11 | 12690 |
| 12 | 33858 |
| 13 | 79596 |
| 14 | 169884 |
| 15 | 335907 |
| 16 | 624195 |
| 17 | 1101672 |
| 18 | 1861704 |
| 19 | 3031236 |
| 20 | 4779108 |
| 21 | 7325640 |
| 22 | 10953576 |
| 23 | 16020477 |
| 24 | 22972653 |
| 25 | 32360724 |
| 26 | 44856900 |
| 27 | 61274070 |
| 28 | 82586790 |
| 29 | 109954260 |
| 30 | 144745380 |
| 31 | 188565975 |
| 32 | 243288279 |
| 33 | 311082768 |
| 34 | 394452432 |