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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 6 |
| 5 | 12 |
| 6 | 24 |
| 7 | 48 |
| 8 | 84 |
| 9 | 140 |
| 10 | 240 |
| 11 | 480 |
| 12 | 720 |
| 13 | 1440 |
| 14 | 2376 |
| 15 | 3696 |
| 16 | 5040 |
| 17 | 10080 |
| 18 | 13824 |
| 19 | 27648 |
| 20 | 38880 |
| 21 | 57600 |
| 22 | 91200 |
| 23 | 182400 |
| 24 | 232320 |
| 25 | 325248 |
| 26 | 510048 |
| 27 | 649152 |
| 28 | 882000 |
| 29 | 1764000 |
| 30 | 2246400 |
| 31 | 4492800 |
| 32 | 5356800 |
| 33 | 7618560 |
| 34 | 11796480 |
| 35 | 15925248 |