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 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 3 |
| 6 | 0 |
| 7 | 7 |
| 8 | 11 |
| 9 | 13 |
| 10 | 0 |
| 11 | 28 |
| 12 | 53 |
| 13 | 67 |
| 14 | 71 |
| 15 | 0 |
| 16 | 152 |
| 17 | 297 |
| 18 | 416 |
| 19 | 472 |
| 20 | 487 |
| 21 | 0 |
| 22 | 1015 |
| 23 | 2022 |
| 24 | 2921 |
| 25 | 3586 |
| 26 | 3890 |
| 27 | 3965 |
| 28 | 0 |
| 29 | 8159 |
| 30 | 16300 |
| 31 | 23929 |
| 32 | 30243 |
| 33 | 34774 |
| 34 | 36804 |
| 35 | 37306 |
| 36 | 0 |
| 37 | 76140 |
| 38 | 152249 |
| 39 | 225082 |
| 40 | 289377 |
| 41 | 341125 |
| 42 | 377690 |
| 43 | 394008 |
| 44 | 398048 |