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 | 36 |
| 2 | 330 |
| 3 | 1716 |
| 4 | 6435 |
| 5 | 19448 |
| 6 | 50388 |
| 7 | 116280 |
| 8 | 245157 |
| 9 | 480700 |
| 10 | 888030 |
| 11 | 1560780 |
| 12 | 2629575 |
| 13 | 4272048 |
| 14 | 6724520 |
| 15 | 10295472 |
| 16 | 15380937 |
| 17 | 22481940 |
| 18 | 32224114 |
| 19 | 45379620 |
| 20 | 62891499 |
| 21 | 85900584 |
| 22 | 115775100 |
| 23 | 154143080 |
| 24 | 202927725 |
| 25 | 264385836 |
| 26 | 341149446 |
| 27 | 436270780 |
| 28 | 553270671 |
| 29 | 696190560 |