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 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 5 |
| 6 | 5 |
| 7 | 18 |
| 8 | 82 |
| 9 | 317 |
| 10 | 1613 |
| 11 | 8626 |
| 12 | 50408 |
| 13 | 303828 |
| 14 | 1911246 |
| 15 | 12432129 |
| 16 | 83217782 |
| 17 | 571314626 |