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 | 1680 |
| 2 | 4320 |
| 3 | 120960 |
| 4 | 166320 |
| 5 | 175560 |
| 6 | 215760 |
| 7 | 725760 |
| 8 | 1814400 |
| 9 | 1080647568000 |
| 10 | 104613949440000 |
| 11 | 115880067072000 |