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 | 1 |
| 3 | 1 |
| 4 | 11 |
| 5 | 1 |
| 6 | 7 |
| 7 | 64 |
| 8 | 289 |
| 9 | 1007 |
| 10 | 44 |
| 11 | 338 |
| 12 | 163 |
| 13 | 3505 |
| 14 | 8297 |
| 15 | 44488 |
| 16 | 27221 |
| 17 | 823117 |
| 18 | 993287 |
| 19 | 20403983 |
| 20 | 26327699 |
| 21 | 27713369 |
| 22 | 27650353 |
| 23 | 315868349 |
| 24 | 2488325579 |
| 25 | 6016553239 |
| 26 | 1399433807 |
| 27 | 3562923992 |
| 28 | 9142117861 |
| 29 | 275160597119 |
| 30 | 268889538733 |
| 31 | 3968532770473 |
| 32 | 114095155444597 |