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 | 2 |
| 1 | 24 |
| 2 | 960 |
| 3 | 80640 |
| 4 | 11612160 |
| 5 | 2554675200 |
| 6 | 797058662400 |
| 7 | 334764638208000 |
| 8 | 182111963185152000 |
| 9 | 124564582818643968000 |
| 10 | 104634249567660933120000 |
| 11 | 105889860562472864317440000 |
| 12 | 127067832674967437180928000000 |