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 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 2 |
| 4 | 1 |
| 5 | 0 |
| 6 | 8 |
| 7 | 5 |
| 8 | 0 |
| 9 | 34 |
| 10 | 17 |
| 11 | 16 |
| 12 | 128 |
| 13 | 105 |
| 14 | 96 |
| 15 | 578 |
| 16 | 537 |
| 17 | 536 |
| 18 | 16 |
| 19 | 4165 |
| 20 | 2624 |
| 21 | 2 |
| 22 | 17697 |
| 23 | 9504 |
| 24 | 9472 |
| 25 | 65553 |
| 26 | 55808 |
| 27 | 55618 |
| 28 | 317489 |
| 29 | 299040 |
| 30 | 295432 |
| 31 | 2053 |
| 32 | 2163968 |
| 33 | 1377506 |
| 34 | 263361 |
| 35 | 8437888 |
| 36 | 6328368 |
| 37 | 5247017 |
| 38 | 38010912 |
| 39 | 33623682 |
| 40 | 1576009 |
| 41 | 165153832 |