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 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | 2 |
| 6 | 12 |
| 7 | 16 |
| 8 | 59 |
| 9 | 110 |
| 10 | 325 |
| 11 | 716 |
| 12 | 1926 |
| 13 | 4584 |
| 14 | 11887 |
| 15 | 29328 |
| 16 | 75071 |
| 17 | 188462 |
| 18 | 480778 |
| 19 | 1217876 |
| 20 | 3107689 |
| 21 | 7913082 |
| 22 | 20221903 |
| 23 | 51664040 |
| 24 | 132259190 |
| 25 | 338721180 |
| 26 | 868587021 |
| 27 | 2228677360 |
| 28 | 5723740309 |
| 29 | 14709001454 |
| 30 | 37826827606 |
| 31 | 97335031824 |