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 | 3 |
| 3 | 8 |
| 4 | 22 |
| 5 | 49 |
| 6 | 104 |
| 7 | 208 |
| 8 | 403 |
| 9 | 760 |
| 10 | 1406 |
| 11 | 2561 |
| 12 | 4608 |
| 13 | 8208 |
| 14 | 14499 |
| 15 | 25432 |
| 16 | 44342 |
| 17 | 76913 |
| 18 | 132808 |
| 19 | 228416 |
| 20 | 391475 |
| 21 | 668840 |
| 22 | 1139518 |
| 23 | 1936513 |
| 24 | 3283392 |
| 25 | 5555424 |
| 26 | 9381699 |
| 27 | 15815528 |
| 28 | 26618518 |
| 29 | 44733745 |
| 30 | 75073256 |
| 31 | 125827696 |
| 32 | 210642643 |