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 | 5 |
| 4 | 14 |
| 5 | 5 |
| 6 | 119 |
| 7 | 5039 |
| 8 | 34406 |
| 9 | 22589 |
| 10 | 10919 |
| 11 | 7625519 |
| 12 | 83825279 |
| 13 | 39916799 |