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 | 120 |
2 | 113400 |
3 | 168168000 |
4 | 305540235000 |
5 | 623360743125120 |
6 | 1370874167589326400 |
7 | 3177459078523411968000 |
8 | 7656714453153197981835000 |
9 | 19010638202652030712978200000 |
10 | 48334775757901219912115629238400 |
11 | 125285878026462826569986857692288000 |