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 | 600 |
| 3 | 17160 |
| 4 | 563976 |
| 5 | 21095424 |
| 6 | 887785920 |
| 7 | 41589313920 |
| 8 | 2148534533376 |
| 9 | 121416817826304 |
| 10 | 7453542764828160 |
| 11 | 494050046853242880 |
| 12 | 35173674025152638976 |
| 13 | 2677307532371585777664 |
| 14 | 216991376759173367070720 |
| 15 | 18658548982937189595709440 |
| 16 | 1696677198406950703545778176 |