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 | 0 |
2 | 2 |
3 | 0 |
4 | 12 |
5 | 120 |
6 | 120 |
7 | 5040 |
8 | 42000 |
9 | 181440 |
10 | 5473440 |
11 | 46569600 |
12 | 479666880 |
13 | 12713500800 |
14 | 123519876480 |
15 | 2190354566400 |
16 | 54922842374400 |
17 | 652587628492800 |
18 | 16192687807296000 |
19 | 400439258111692800 |
20 | 5994400896144460800 |
21 | 182793304684134144000 |
22 | 4590673238662192281600 |