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 | 240 |
| 3 | 504 |
| 4 | 480 |
| 5 | 264 |
| 6 | 65520 |
| 7 | 24 |
| 8 | 16320 |
| 9 | 28728 |
| 10 | 13200 |
| 11 | 552 |
| 12 | 131040 |
| 13 | 24 |
| 14 | 6960 |
| 15 | 171864 |
| 16 | 32640 |
| 17 | 24 |
| 18 | 138181680 |
| 19 | 24 |
| 20 | 1082400 |
| 21 | 151704 |
| 22 | 5520 |
| 23 | 1128 |
| 24 | 4455360 |
| 25 | 264 |
| 26 | 12720 |
| 27 | 86184 |
| 28 | 13920 |
| 29 | 1416 |
| 30 | 6814407600 |
| 31 | 24 |