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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 8 |
| 5 | 42 |
| 6 | 168 |
| 7 | 760 |
| 8 | 2418 |
| 9 | 10490 |
| 10 | 30842 |
| 11 | 131676 |