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 | 2 |
| 5 | 9 |
| 6 | 30 |
| 7 | 80 |
| 8 | 193 |
| 9 | 432 |
| 10 | 925 |
| 11 | 1928 |
| 12 | 3953 |
| 13 | 8024 |
| 14 | 16189 |
| 15 | 32544 |