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 | 1 |
| 4 | 0 |
| 5 | 2 |
| 6 | 8 |
| 7 | 10 |
| 8 | 22 |
| 9 | 58 |
| 10 | 112 |
| 11 | 219 |
| 12 | 466 |
| 13 | 920 |
| 14 | 1787 |
| 15 | 3600 |
| 16 | 7025 |
| 17 | 13532 |
| 18 | 26315 |
| 19 | 50625 |
| 20 | 96775 |
| 21 | 185000 |
| 22 | 351714 |
| 23 | 665942 |
| 24 | 1258649 |
| 25 | 2371219 |
| 26 | 4454004 |
| 27 | 8348735 |
| 28 | 15612146 |
| 29 | 29128863 |
| 30 | 54245790 |
| 31 | 100828939 |
| 32 | 187074952 |
| 33 | 346527510 |
| 34 | 640878692 |
| 35 | 1183480187 |