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) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 24 |
6 | 360 |
7 | 3360 |
8 | 25200 |
9 | 166824 |
10 | 1020600 |
11 | 5921520 |
12 | 33105600 |
13 | 180204024 |
14 | 961800840 |
15 | 5058406080 |
16 | 26308573200 |
17 | 135666039624 |
18 | 694994293080 |
19 | 3542142833040 |
20 | 17980946172000 |
21 | 90990301641624 |