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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 12 |
| 7 | 12 |
| 8 | 12 |
| 9 | 36 |
| 10 | 720 |
| 11 | 720 |
| 12 | 480 |
| 13 | 480 |
| 14 | 1680 |
| 15 | 3024 |
| 16 | 12096 |
| 17 | 12096 |
| 18 | 145152 |
| 19 | 145152 |
| 20 | 7257600 |
| 21 | 345600 |
| 22 | 1900800 |
| 23 | 1900800 |
| 24 | 136857600 |
| 25 | 684288000 |
| 26 | 4447872000 |
| 27 | 4447872000 |
| 28 | 435891456000 |
| 29 | 435891456000 |
| 30 | 3138418483200 |
| 31 | 3138418483200 |
| 32 | 6276836966400 |
| 33 | 190207180800 |