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) |
|---|---|
| 4 | 0 |
| 5 | 1 |
| 6 | 7 |
| 7 | 44 |
| 8 | 206 |
| 9 | 937 |
| 10 | 3997 |
| 11 | 16719 |
| 12 | 68520 |
| 13 | 278239 |
| 14 | 1121632 |
| 15 | 4504875 |