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 | 0 |
| 2 | 7 |
| 3 | 343 |
| 4 | 16800 |
| 5 | 822857 |
| 6 | 40303193 |
| 7 | 1974033600 |
| 8 | 96687343207 |
| 9 | 4735705783543 |
| 10 | 231952896050400 |
| 11 | 11360956200686057 |
| 12 | 556454900937566393 |
| 13 | 27254929189740067200 |
| 14 | 1334935075396325726407 |