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) |
|---|---|
| 2 | 24 |
| 3 | 8064 |
| 4 | 5037600 |
| 5 | 3174009200 |
| 6 | 1882950151680 |
| 7 | 899220266678944 |
| 8 | 309189853885141152 |
| 9 | 70127950221363153600 |
| 10 | 10010731525034640878800 |
| 11 | 907457680142781736880560 |
| 12 | 54692309643517397134557792 |
| 13 | 2316866493981973489812610432 |
| 14 | 72620271578582971583471226760 |