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 | 120 |
| 2 | 193680 |
| 3 | 16803360 |
| 4 | 397857360 |
| 5 | 4629960720 |
| 6 | 34416930240 |
| 7 | 187487926080 |
| 8 | 814889912400 |
| 9 | 2975537850840 |
| 10 | 9486537389280 |
| 11 | 27053010073440 |
| 12 | 70486192486080 |
| 13 | 169931025998160 |
| 14 | 384163634574720 |