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 | 2 |
2 | 24 |
3 | 40320 |
4 | 20922789888000 |
5 | 263130836933693530167218012160000000 |
6 | 126886932185884164103433389335161480802865516174545192198801894375214704230400000000000000 |