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) |
|---|---|
| 0 | 1 |
| 1 | 13 |
| 2 | 90 |
| 3 | 442 |
| 4 | 1729 |
| 5 | 5733 |
| 6 | 16744 |
| 7 | 44200 |
| 8 | 107406 |
| 9 | 243542 |
| 10 | 520676 |
| 11 | 1058148 |
| 12 | 2057510 |
| 13 | 3848222 |
| 14 | 6953544 |
| 15 | 12183560 |
| 16 | 20764055 |
| 17 | 34512075 |
| 18 | 56071470 |
| 19 | 89224590 |
| 20 | 139299615 |
| 21 | 213696795 |
| 22 | 322561200 |
| 23 | 479634480 |
| 24 | 703323660 |
| 25 | 1018031196 |
| 26 | 1455797448 |
| 27 | 2058314440 |
| 28 | 2879378332 |