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) |
|---|---|
| 7 | 1 |
| 8 | 6 |
| 9 | 30 |
| 10 | 120 |
| 11 | 416 |
| 12 | 1268 |
| 13 | 3499 |
| 14 | 8833 |
| 15 | 20730 |
| 16 | 45625 |
| 17 | 95052 |
| 18 | 188638 |
| 19 | 358822 |
| 20 | 657169 |
| 21 | 1163791 |
| 22 | 1999495 |
| 23 | 3343038 |
| 24 | 5452829 |
| 25 | 8696613 |
| 26 | 13587910 |
| 27 | 20834487 |
| 28 | 31396728 |
| 29 | 46563312 |
| 30 | 68041054 |
| 31 | 98068941 |
| 32 | 139551650 |
| 33 | 196226198 |
| 34 | 272854810 |
| 35 | 375461896 |