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 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 3 |
| 5 | 25 |
| 6 | 17 |
| 7 | 2 |
| 8 | 172 |
| 9 | 53 |
| 10 | 7 |
| 11 | 1422 |
| 12 | 436 |
| 13 | 72 |
| 14 | 5 |
| 15 | 7894 |
| 16 | 1854 |
| 17 | 271 |
| 18 | 19 |
| 19 | 86372 |
| 20 | 19919 |
| 21 | 3179 |
| 22 | 312 |
| 23 | 14 |
| 24 | 527951 |
| 25 | 102503 |
| 26 | 14324 |
| 27 | 1287 |
| 28 | 56 |
| 29 | 7237537 |
| 30 | 1373018 |
| 31 | 198783 |
| 32 | 20572 |
| 33 | 1350 |
| 34 | 42 |
| 35 | 48862041 |
| 36 | 8055893 |
| 37 | 1032239 |
| 38 | 96532 |
| 39 | 5866 |
| 40 | 174 |
| 41 | 801902467 |
| 42 | 129068117 |
| 43 | 16767855 |