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 | 0 |
| 4 | 4 |
| 5 | 1 |
| 6 | 15 |
| 7 | 7 |
| 8 | 56 |
| 9 | 37 |
| 10 | 210 |
| 11 | 176 |
| 12 | 793 |
| 13 | 793 |
| 14 | 3017 |
| 15 | 3458 |
| 16 | 11561 |
| 17 | 14756 |
| 18 | 44592 |
| 19 | 62017 |
| 20 | 172995 |
| 21 | 257775 |
| 22 | 674520 |
| 23 | 1062601 |
| 24 | 2641366 |
| 25 | 4352660 |
| 26 | 10381281 |
| 27 | 17742621 |
| 28 | 40927033 |
| 29 | 72048354 |
| 30 | 161766061 |
| 31 | 291693136 |
| 32 | 640758252 |
| 33 | 1178135905 |
| 34 | 2542557383 |
| 35 | 4749439975 |
| 36 | 10103745288 |