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 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 10 |
| 6 | 9 |
| 7 | 4 |
| 8 | 44 |
| 9 | 102 |
| 10 | 64 |
| 11 | 9 |
| 12 | 196 |
| 13 | 870 |
| 14 | 1304 |
| 15 | 625 |
| 16 | 20 |
| 17 | 876 |
| 18 | 6744 |
| 19 | 18200 |
| 20 | 20080 |
| 21 | 7776 |
| 22 | 48 |
| 23 | 4020 |
| 24 | 50421 |
| 25 | 218260 |
| 26 | 416500 |
| 27 | 362322 |
| 28 | 117649 |
| 29 | 115 |
| 30 | 18766 |
| 31 | 371676 |
| 32 | 2427600 |
| 33 | 7133655 |
| 34 | 10465290 |
| 35 | 7503328 |
| 36 | 2097152 |
| 37 | 286 |
| 38 | 89322 |
| 39 | 2731569 |
| 40 | 25919692 |
| 41 | 110136425 |
| 42 | 242427438 |
| 43 | 288002582 |
| 44 | 175481056 |
| 45 | 43046721 |