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 | 1 |
| 4 | 3 |
| 5 | 9 |
| 6 | 44 |
| 7 | 294 |
| 8 | 2893 |
| 9 | 36496 |
| 10 | 545808 |
| 11 | 9029737 |
| 12 | 159563559 |
| 13 | 2952794985 |
| 14 | 56589742050 |