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 | 1 |
| 1 | 1 |
| 2 | 13 |
| 3 | 100 |
| 4 | 578 |
| 5 | 2530 |
| 6 | 8866 |
| 7 | 25300 |
| 8 | 60115 |
| 9 | 120175 |
| 10 | 204347 |
| 11 | 297160 |
| 12 | 371516 |
| 13 | 400024 |
| 14 | 371516 |
| 15 | 297160 |
| 16 | 204347 |
| 17 | 120175 |
| 18 | 60115 |
| 19 | 25300 |
| 20 | 8866 |
| 21 | 2530 |
| 22 | 578 |
| 23 | 100 |
| 24 | 13 |
| 25 | 1 |
| 26 | 1 |