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 | 1 |
| 2 | 8 |
| 3 | 1944 |
| 4 | 31850496 |
| 5 | 1555200000000000 |
| 6 | 20311991333683200000000000 |
| 7 | 4725188984058417024032990822400000000000 |
| 8 | 680971499131541103151460312870118086801149132800000000000 |