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 | 48 |
| 4 | 8088 |
| 5 | 3125547 |
| 6 | 5589631828 |
| 7 | 38469698642410 |
| 8 | 1110306381675662688 |