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 | 0 |
| 1 | 8 |
| 2 | 8832 |
| 3 | 1228800 |
| 4 | 79364096 |
| 5 | 3562536960 |
| 6 | 129276837888 |
| 7 | 4079413624832 |
| 8 | 116608362086400 |
| 9 | 3096396542509056 |
| 10 | 77661255048888320 |
| 11 | 1861218099127123968 |
| 12 | 42980384518787039232 |
| 13 | 962362945373732864000 |
| 14 | 20993511648589057622016 |
| 15 | 447858123072052742062080 |
| 16 | 9371462498278516088373248 |