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 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 7 |
| 4 | 4 |
| 5 | 55 |
| 6 | 17 |
| 7 | 576 |
| 8 | 129 |
| 9 | 13243 |
| 10 | 1554 |
| 11 | 465675 |
| 12 | 35443 |
| 13 | 32233206 |
| 14 | 1330673 |
| 15 | 3746034675 |
| 16 | 92945020 |