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 | 2 |
| 4 | 3 |
| 5 | 32 |
| 6 | 3 |
| 7 | 4 |
| 8 | 294 |
| 9 | 294 |
| 10 | 4 |
| 11 | 5 |
| 12 | 2304 |
| 13 | 11664 |
| 14 | 2304 |
| 15 | 5 |
| 16 | 6 |
| 17 | 16810 |
| 18 | 367500 |
| 19 | 367500 |
| 20 | 16810 |
| 21 | 6 |
| 22 | 7 |
| 23 | 117600 |
| 24 | 10609215 |
| 25 | 42467328 |
| 26 | 10609215 |
| 27 | 117600 |
| 28 | 7 |
| 29 | 8 |
| 30 | 799694 |
| 31 | 292626432 |
| 32 | 4381392020 |
| 33 | 4381392020 |
| 34 | 292626432 |
| 35 | 799694 |
| 36 | 8 |
| 37 | 9 |
| 38 | 5326848 |
| 39 | 7839321861 |
| 40 | 428652000000 |
| 41 | 1562500000000 |
| 42 | 428652000000 |
| 43 | 7839321861 |
| 44 | 5326848 |
| 45 | 9 |