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 | 8 |
| 2 | 96 |
| 3 | 480 |
| 4 | 1440 |
| 5 | 40320 |
| 6 | 443520 |
| 7 | 1330560 |
| 8 | 34594560 |
| 9 | 86486400 |
| 10 | 588107520 |
| 11 | 1470268800 |
| 12 | 11174042880 |
| 13 | 55870214400 |
| 14 | 195545750400 |
| 15 | 1285014931200 |
| 16 | 17990209036800 |
| 17 | 53970627110400 |
| 18 | 1565148186201600 |
| 19 | 194078375088998400 |
| 20 | 7180899878292940800 |
| 21 | 35904499391464704000 |
| 22 | 294416895010010572800 |