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 | 36 |
| 2 | 12 |
| 3 | 1536 |
| 4 | 888 |
| 5 | 120 |
| 6 | 80448 |
| 7 | 62592 |
| 8 | 15168 |
| 9 | 1152 |
| 10 | 5068800 |
| 11 | 4813056 |
| 12 | 1600704 |
| 13 | 222336 |
| 14 | 10944 |
| 15 | 375598080 |
| 16 | 413351424 |
| 17 | 169917696 |
| 18 | 32811264 |
| 19 | 2992896 |
| 20 | 103680 |
| 21 | 32103751680 |
| 22 | 39661608960 |
| 23 | 19066503168 |
| 24 | 4592982528 |