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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 22 |
| 7 | 43 |
| 8 | 94 |
| 9 | 173 |
| 10 | 398 |
| 11 | 707 |
| 12 | 1680 |
| 13 | 2917 |
| 14 | 7085 |
| 15 | 12111 |
| 16 | 29877 |
| 17 | 50503 |
| 18 | 126021 |
| 19 | 211263 |
| 20 | 531751 |
| 21 | 885831 |
| 22 | 2244627 |
| 23 | 3720995 |
| 24 | 9478605 |
| 25 | 15652239 |
| 26 | 40040183 |
| 27 | 65913927 |
| 28 | 169193597 |
| 29 | 277822147 |
| 30 | 715143046 |
| 31 | 1171853635 |
| 32 | 3023492646 |