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 | 2431 |
| 2 | 4061871 |
| 3 | 7528988476 |
| 4 | 15467641899285 |
| 5 | 34155922905682979 |
| 6 | 79397199549271412737 |
| 7 | 191739533381111401455478 |
| 8 | 476872353039366288373555323 |