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 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 2 |
| 5 | 0 |
| 6 | 3 |
| 7 | 10 |
| 8 | 3 |
| 9 | 4 |
| 10 | 28 |
| 11 | 28 |
| 12 | 9 |
| 13 | 60 |
| 14 | 126 |
| 15 | 66 |
| 16 | 115 |
| 17 | 396 |
| 18 | 403 |
| 19 | 292 |
| 20 | 1007 |
| 21 | 1724 |
| 22 | 1281 |
| 23 | 2366 |
| 24 | 5736 |
| 25 | 6128 |
| 26 | 6468 |
| 27 | 16202 |
| 28 | 24888 |
| 29 | 23664 |
| 30 | 43055 |
| 31 | 85158 |
| 32 | 97156 |
| 33 | 124044 |
| 34 | 257474 |
| 35 | 374538 |
| 36 | 421785 |
| 37 | 740324 |
| 38 | 1294129 |
| 39 | 1577756 |
| 40 | 2217676 |
| 41 | 4085272 |
| 42 | 5813587 |
| 43 | 7319572 |
| 44 | 12370630 |