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 | -960 |
2 | 567360 |
3 | -266138880 |
4 | 108735481920 |
5 | -40500351480960 |
6 | 14114830665358080 |
7 | -4678563821426250240 |
8 | 1491145606587529742400 |
9 | -460511820740945555286720 |
10 | 138585483759128030100927360 |
11 | -40812342463218781348220286720 |
12 | 11800049457060387849887324117760 |
13 | -3358272262154871467174772417214080 |