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 | 0 |
| 2 | 3 |
| 3 | 10 |
| 4 | 35 |
| 5 | 1 |
| 6 | 30 |
| 7 | 1 |
| 8 | 291 |
| 9 | 253 |
| 10 | 378 |
| 11 | 1 |
| 12 | 782 |
| 13 | 1 |
| 14 | 2404 |
| 15 | 1260 |
| 16 | 291 |
| 17 | 1 |
| 18 | 3378 |
| 19 | 1 |
| 20 | 410 |
| 21 | 7899 |
| 22 | 3996 |
| 23 | 1 |
| 24 | 6030 |
| 25 | 126 |
| 26 | 10988 |
| 27 | 11188 |
| 28 | 5180 |
| 29 | 1 |
| 30 | 19712 |
| 31 | 1 |
| 32 | 8483 |
| 33 | 5334 |
| 34 | 34394 |
| 35 | 1841 |
| 36 | 21410 |
| 37 | 1 |
| 38 | 20580 |
| 39 | 39556 |
| 40 | 38810 |
| 41 | 1 |
| 42 | 64260 |
| 43 | 1 |
| 44 | 35972 |
| 45 | 66060 |
| 46 | 36504 |
| 47 | 1 |
| 48 | 61326 |
| 49 | 1716 |
| 50 | 123628 |