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 | 2 |
| 3 | 3 |
| 4 | 8 |
| 5 | 9 |
| 6 | 24 |
| 7 | 37 |
| 8 | 85 |
| 9 | 1115 |
| 10 | 29153 |
| 11 | 423233 |
| 12 | 2208087 |
| 13 | 5102497 |
| 14 | 9813637 |
| 15 | 15922076 |
| 16 | 19204759 |
| 17 | 106559540 |
| 18 | 120015709 |
| 19 | 1493877142 |
| 20 | 2199074984 |
| 21 | 32818755269 |
| 22 | 1505298832166 |
| 23 | 1507229768977 |
| 24 | 2841536357911 |
| 25 | 14805574584765 |