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 | 720 |
2 | 344881152000 |
3 | 2208058019165981638656000000 |
4 | 1369986068925795885347091500568179543900160000000000 |
5 | 363392722685428853076589064611759104109572860599125858715484081356800000000000000000 |