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 | 8 |
| 3 | 240 |
| 4 | 25808 |
| 5 | 9989376 |
| 6 | 13918667808 |
| 7 | 69786476414080 |
| 8 | 1259406594247832896 |
| 9 | 81801738558534434812512 |
| 10 | 19123141293346274424868082896 |
| 11 | 16090014430301966976090685132636800 |