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) |
|---|---|
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 3 |
| 13 | 5 |
| 14 | 17 |
| 15 | 40 |
| 16 | 145 |
| 17 | 355 |
| 18 | 1264 |
| 19 | 3931 |
| 20 | 12999 |
| 21 | 44727 |