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 | 1 |
| 1 | 24 |
| 2 | 2520 |
| 3 | 369600 |
| 4 | 63063000 |
| 5 | 11732745024 |
| 6 | 2308743493056 |
| 7 | 472518347558400 |
| 8 | 99561092450391000 |
| 9 | 21452752266265320000 |
| 10 | 4705360871073570227520 |
| 11 | 1047071828879079131681280 |
| 12 | 235809301462142612780721600 |
| 13 | 53644737765488792839237440000 |
| 14 | 12309355935372581458927646400000 |