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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 3 |
| 13 | 2 |
| 14 | 5 |
| 15 | 3 |
| 16 | 15 |
| 17 | 5 |
| 18 | 44 |
| 19 | 10 |
| 20 | 203 |
| 21 | 47 |
| 22 | 1415 |
| 23 | 1710 |
| 24 | 27771 |
| 25 | 197951 |
| 26 | 2613710 |
| 27 | 33117920 |
| 28 | 463707092 |
| 29 | 6709514282 |
| 30 | 102306345333 |
| 31 | 1597440872721 |