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) |
|---|---|
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 2 |
| 8 | 9 |
| 9 | 28 |
| 10 | 107 |
| 11 | 376 |
| 12 | 1457 |
| 13 | 5733 |
| 14 | 24385 |
| 15 | 110240 |
| 16 | 540400 |
| 17 | 2867847 |