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 | 36 |
| 3 | 21952 |
| 4 | 42998169600000000 |
| 5 | 30019840638976 |
| 6 | 8480691722056324948490652657647616 |
| 7 | 2343612817652433441167245312 |