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) |
|---|---|
| 4 | 3 |
| 5 | 3 |
| 6 | 36 |
| 7 | 76 |
| 8 | 690 |
| 9 | 2996 |
| 10 | 22368 |
| 11 | 147472 |
| 12 | 1284653 |
| 13 | 11006509 |