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 | 144 |
| 3 | 5760 |
| 4 | 362880 |
| 5 | 39916800 |
| 6 | 6227020800 |
| 7 | 1482030950400 |
| 8 | 422378820864000 |
| 9 | 155435406077952000 |
| 10 | 81137281972690944000 |
| 11 | 50305114823068385280000 |
| 12 | 39087074217524135362560000 |
| 13 | 35256540944206770097029120000 |