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 | 7 |
| 4 | 77 |
| 5 | 8932 |
| 6 | 119675402 |
| 7 | 21483302825630107 |
| 8 | 692298450446589820159203790062227 |
| 9 | 718915716736124071145150312487360788973317227637596552328693330407 |