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) |
|---|---|
| 6 | 1 |
| 7 | 1 |
| 8 | 2 |
| 9 | 3 |
| 10 | 8 |
| 11 | 17 |
| 12 | 55 |
| 13 | 166 |
| 14 | 675 |
| 15 | 2977 |
| 16 | 15553 |
| 17 | 90159 |
| 18 | 586769 |
| 19 | 4197170 |
| 20 | 32919812 |
| 21 | 281235872 |
| 22 | 2609796620 |