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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 12 |
| 4 | 24 |
| 5 | 96 |
| 6 | 690 |
| 7 | 1386 |
| 8 | 3024 |
| 9 | 3738 |
| 10 | 3794 |
| 11 | 5544 |
| 12 | 22834 |
| 13 | 57278 |
| 14 | 68908 |
| 15 | 89060 |
| 16 | 196240 |
| 17 | 360000 |
| 18 | 388421 |
| 19 | 524160 |
| 20 | 1556360 |
| 21 | 1572480 |
| 22 | 2359140 |
| 23 | 3929940 |
| 24 | 8057711 |
| 25 | 11484900 |
| 26 | 15201585 |
| 27 | 16115505 |
| 28 | 19910436 |
| 29 | 32444160 |
| 30 | 7348411575 |
| 31 | 16097143458 |
| 32 | 33273395232 |
| 33 | 51333952011 |