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 | 5 |
| 3 | 12 |
| 4 | 72 |
| 5 | 400 |
| 6 | 2698 |
| 7 | 18646 |
| 8 | 136000 |
| 9 | 1013342 |
| 10 | 7713270 |
| 11 | 59569974 |
| 12 | 465894736 |
| 13 | 3681136600 |
| 14 | 29342106638 |