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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 0 |
| 8 | 16 |
| 9 | 0 |
| 10 | 36 |
| 11 | 0 |
| 12 | 16 |
| 13 | 0 |
| 14 | 1 |
| 15 | 346 |
| 16 | 1824 |
| 17 | 4536 |
| 18 | 7136 |
| 19 | 7947 |
| 20 | 6336 |
| 21 | 3936 |
| 22 | 1728 |
| 23 | 684 |
| 24 | 128 |
| 25 | 48 |
| 26 | 0 |
| 27 | 1 |
| 28 | 748521 |
| 29 | 3662976 |
| 30 | 8607744 |
| 31 | 12880512 |
| 32 | 13731616 |
| 33 | 11042688 |
| 34 | 6928704 |
| 35 | 3458432 |
| 36 | 1395126 |
| 37 | 453888 |
| 38 | 122016 |
| 39 | 25344 |
| 40 | 4824 |
| 41 | 512 |
| 42 | 96 |
| 43 | 0 |
| 44 | 1 |
| 45 | 3993445276 |