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) |
|---|---|
| 2 | 1 |
| 3 | 3 |
| 4 | 9 |
| 5 | 33 |
| 6 | 123 |
| 7 | 513 |
| 8 | 2077 |
| 9 | 8759 |
| 10 | 37184 |
| 11 | 159508 |
| 12 | 688446 |
| 13 | 2993451 |
| 14 | 13082724 |