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 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 720 |
7 | 15120 |
8 | 231840 |
9 | 3265920 |
10 | 45556560 |
11 | 649479600 |
12 | 9604465200 |
13 | 148370508000 |
14 | 2402005525920 |
15 | 40797624067200 |
16 | 726963917097600 |
17 | 13580328282393600 |
18 | 265689107448756480 |
19 | 5437099866285377280 |
20 | 116229410301685651200 |
21 | 2591985252922277184000 |
22 | 60218914823672258142720 |