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 | 2 |
| 2 | 0 |
| 3 | 8 |
| 4 | 24 |
| 5 | 16 |
| 6 | 336 |
| 7 | 832 |
| 8 | 576 |
| 9 | 128 |
| 10 | 12480 |
| 11 | 28480 |
| 12 | 23680 |
| 13 | 8960 |
| 14 | 1280 |
| 15 | 481920 |
| 16 | 1208832 |
| 17 | 1167360 |
| 18 | 552960 |
| 19 | 130560 |
| 20 | 12288 |
| 21 | 22786560 |
| 22 | 61834752 |
| 23 | 65709056 |
| 24 | 35911680 |
| 25 | 10895360 |
| 26 | 1763328 |
| 27 | 118784 |
| 28 | 1280885760 |
| 29 | 3645444096 |