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 | 8 |
| 2 | 0 |
| 3 | 24 |
| 4 | 64 |
| 5 | 360 |
| 6 | 1728 |
| 7 | 8624 |
| 8 | 43776 |
| 9 | 225216 |
| 10 | 1173280 |
| 11 | 6182704 |
| 12 | 32905536 |
| 13 | 176657000 |
| 14 | 955629920 |
| 15 | 5204178360 |
| 16 | 28509374976 |
| 17 | 157005901896 |
| 18 | 868756900608 |
| 19 | 4827586102216 |
| 20 | 26929911745600 |
| 21 | 150750954809952 |
| 22 | 846588050093632 |
| 23 | 4768197762850608 |