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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 10 |
| 4 | 73 |
| 5 | 508 |
| 6 | 3468 |
| 7 | 25629 |
| 8 | 194614 |
| 9 | 1537504 |
| 10 | 12447679 |
| 11 | 102834428 |