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 | 2 |
| 3 | 6 |
| 4 | 38 |
| 5 | 190 |
| 6 | 5662 |
| 7 | 39255 |
| 8 | 1206042 |
| 9 | 22481939 |
| 10 | 392228153 |
| 11 | 6329975006 |