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) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 5 |
| 6 | 18 |
| 7 | 84 |
| 8 | 607 |
| 9 | 6100 |
| 10 | 78824 |
| 11 | 1195280 |
| 12 | 20297600 |
| 13 | 376940415 |
| 14 | 7565248679 |