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 | 24 |
| 2 | 360 |
| 3 | 4320 |
| 4 | 14688 |
| 5 | 1468800 |
| 6 | 9547200 |
| 7 | 50585472 |
| 8 | 54198720 |
| 9 | 189695520 |
| 10 | 1680459264 |