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 | 5 |
| 3 | 6 |
| 4 | 30 |
| 5 | 36 |
| 6 | 180 |
| 7 | 216 |
| 8 | 1080 |
| 9 | 1296 |
| 10 | 6480 |
| 11 | 7776 |
| 12 | 38880 |
| 13 | 46656 |
| 14 | 233280 |
| 15 | 279936 |
| 16 | 1399680 |
| 17 | 1679616 |
| 18 | 8398080 |
| 19 | 10077696 |
| 20 | 50388480 |
| 21 | 60466176 |
| 22 | 302330880 |
| 23 | 362797056 |
| 24 | 1813985280 |
| 25 | 2176782336 |
| 26 | 10883911680 |
| 27 | 13060694016 |
| 28 | 65303470080 |
| 29 | 78364164096 |