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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 1 |
| 14 | 0 |
| 15 | 3 |
| 16 | 5 |
| 17 | 15 |
| 18 | 19 |
| 19 | 57 |
| 20 | 72 |
| 21 | 275 |
| 22 | 499 |
| 23 | 1778 |
| 24 | 3705 |
| 25 | 11318 |
| 26 | 24525 |
| 27 | 65906 |
| 28 | 135599 |
| 29 | 333938 |
| 30 | 687969 |
| 31 | 1681759 |
| 32 | 3652677 |