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 | 2 |
3 | 6 |
4 | 36 |
5 | 240 |
6 | 2040 |
7 | 20160 |
8 | 231840 |
9 | 3024000 |
10 | 44271360 |
11 | 718502400 |
12 | 12813292800 |
13 | 249080832000 |
14 | 5243151513600 |
15 | 118824010905600 |
16 | 2884729655808000 |
17 | 74694359900160000 |
18 | 2054806272110592000 |
19 | 59849389401145344000 |
20 | 1840003788783992832000 |
21 | 59545276650123264000000 |