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 | 1 |
| 2 | 1255 |
| 3 | 99621 |
| 4 | 25445515 |
| 5 | 3830482893 |
| 6 | 735394314429 |
| 7 | 125449223494157 |
| 8 | 22714686725936048 |
| 9 | 3988620629294917699 |
| 10 | 711716770252031164458 |
| 11 | 125923932676484373629595 |
| 12 | 22380459664033815935121317 |
| 13 | 3968099315998651724194784995 |
| 14 | 704461390023584621534680605823 |