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 | 6 |
| 2 | 1 |
| 3 | 48 |
| 4 | 15 |
| 5 | 1 |
| 6 | 605 |
| 7 | 255 |
| 8 | 24 |
| 9 | 1 |
| 10 | 11196 |
| 11 | 5630 |
| 12 | 624 |
| 13 | 33 |
| 14 | 1 |
| 15 | 280440 |
| 16 | 159210 |
| 17 | 19484 |
| 18 | 1155 |
| 19 | 42 |
| 20 | 1 |
| 21 | 8981460 |
| 22 | 5584635 |
| 23 | 731664 |
| 24 | 46541 |
| 25 | 1848 |
| 26 | 51 |
| 27 | 1 |
| 28 | 353283128 |
| 29 | 236051661 |
| 30 | 32532732 |
| 31 | 2173248 |
| 32 | 91175 |
| 33 | 2703 |
| 34 | 60 |
| 35 | 1 |
| 36 | 16567072675 |
| 37 | 11741443007 |
| 38 | 1683566556 |