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 | 1 |
| 2 | 4 |
| 3 | 24 |
| 4 | 48 |
| 5 | 480 |
| 6 | 960 |
| 7 | 13440 |
| 8 | 26880 |
| 9 | 161280 |
| 10 | 322560 |
| 11 | 7096320 |
| 12 | 14192640 |
| 13 | 369008640 |
| 14 | 738017280 |
| 15 | 1476034560 |
| 16 | 2952069120 |
| 17 | 100370350080 |
| 18 | 200740700160 |
| 19 | 7628146606080 |
| 20 | 15256293212160 |
| 21 | 30512586424320 |
| 22 | 61025172848640 |
| 23 | 2807157951037440 |
| 24 | 5614315902074880 |
| 25 | 56143159020748800 |