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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 8 |
| 5 | 15 |
| 6 | 36 |
| 7 | 63 |
| 8 | 192 |
| 9 | 405 |
| 10 | 1080 |
| 11 | 2079 |
| 12 | 6048 |
| 13 | 12285 |
| 14 | 31752 |
| 15 | 59535 |
| 16 | 193536 |
| 17 | 433755 |
| 18 | 1224720 |
| 19 | 2488563 |
| 20 | 7620480 |
| 21 | 16253055 |
| 22 | 44008272 |
| 23 | 86266215 |
| 24 | 274337280 |
| 25 | 602791875 |
| 26 | 1671742800 |
| 27 | 3341878155 |
| 28 | 10081895040 |
| 29 | 21210236775 |
| 30 | 56710659600 |
| 31 | 109876902975 |
| 32 | 368709304320 |