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 | 1 |
| 2 | 2 |
| 3 | 24 |
| 4 | 40 |
| 5 | 108 |
| 6 | 156 |
| 7 | 296 |
| 8 | 732 |
| 9 | 1692 |
| 10 | 31616 |
| 11 | 51608 |
| 12 | 568720 |
| 13 | 766620 |
| 14 | 6195132 |
| 15 | 6938752 |
| 16 | 17879440 |
| 17 | 18578320 |
| 18 | 35196584 |
| 19 | 228694176 |
| 20 | 475292728 |
| 21 | 589169184 |
| 22 | 1451254356 |
| 23 | 3252050592 |
| 24 | 4865544096 |
| 25 | 6328305120 |
| 26 | 8082626976 |
| 27 | 8694028264 |
| 28 | 9112984448 |
| 29 | 30328732568 |
| 30 | 46093418640 |