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 | 70 |
| 3 | 252 |
| 4 | 714 |
| 5 | 1722 |
| 6 | 3696 |
| 7 | 7260 |
| 8 | 13299 |
| 9 | 23023 |
| 10 | 38038 |
| 11 | 60424 |
| 12 | 92820 |
| 13 | 138516 |
| 14 | 201552 |
| 15 | 286824 |
| 16 | 400197 |
| 17 | 548625 |
| 18 | 740278 |
| 19 | 984676 |
| 20 | 1292830 |
| 21 | 1677390 |
| 22 | 2152800 |
| 23 | 2735460 |
| 24 | 3443895 |
| 25 | 4298931 |
| 26 | 5323878 |
| 27 | 6544720 |
| 28 | 7990312 |
| 29 | 9692584 |
| 30 | 11686752 |
| 31 | 14011536 |
| 32 | 16709385 |
| 33 | 19826709 |
| 34 | 23414118 |
| 35 | 27526668 |