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 | 14 |
| 2 | 119 |
| 3 | 798 |
| 4 | 4557 |
| 5 | 23142 |
| 6 | 107366 |
| 7 | 462856 |
| 8 | 1876952 |
| 9 | 7224714 |
| 10 | 26579063 |
| 11 | 93966992 |
| 12 | 320651170 |
| 13 | 1059923690 |
| 14 | 3404112479 |
| 15 | 10649329250 |
| 16 | 32521525967 |
| 17 | 97132069090 |
| 18 | 284187808429 |
| 19 | 815681830796 |
| 20 | 2299630643723 |
| 21 | 6375380037894 |
| 22 | 17398106046384 |
| 23 | 46777705917502 |
| 24 | 124014391872203 |
| 25 | 324432027054226 |