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 | 8 |
| 4 | 92 |
| 5 | 606 |
| 6 | 4835 |
| 7 | 41059 |
| 8 | 354239 |
| 9 | 3133668 |