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 | 3 |
| 2 | 14 |
| 3 | 91 |
| 4 | 739 |
| 5 | 8200 |
| 6 | 103545 |
| 7 | 1454823 |
| 8 | 22446667 |
| 9 | 434412701 |
| 10 | 8858524146 |
| 11 | 190620224636 |
| 12 | 4325312221672 |
| 13 | 103324196180719 |
| 14 | 2949714706867857 |
| 15 | 86423553562234994 |
| 16 | 2610476419197591903 |
| 17 | 81455201815035815833 |