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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 8 |
| 5 | 13 |
| 6 | 65 |
| 7 | 67 |
| 8 | 322 |
| 9 | 573 |
| 10 | 2495 |
| 11 | 2979 |
| 12 | 23294 |
| 13 | 22217 |
| 14 | 133081 |
| 15 | 300947 |
| 16 | 909050 |
| 17 | 1345633 |
| 18 | 10766559 |
| 19 | 10762819 |
| 20 | 72954582 |
| 21 | 145362861 |
| 22 | 523026545 |
| 23 | 713213955 |
| 24 | 5893685746 |
| 25 | 7060765719 |
| 26 | 35303760331 |