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 | 0 |
| 4 | 1 |
| 5 | 44 |
| 6 | 450 |
| 7 | 3175 |
| 8 | 17977 |
| 9 | 91326 |
| 10 | 433434 |
| 11 | 1968268 |
| 12 | 8674028 |
| 13 | 37428470 |
| 14 | 159059732 |