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 | 24 |
5 | 180 |
6 | 900 |
7 | 3780 |
8 | 14448 |
9 | 52164 |
10 | 181500 |
11 | 615780 |
12 | 2052072 |
13 | 6749028 |
14 | 21976500 |
15 | 71007300 |
16 | 228009696 |
17 | 728451972 |
18 | 2317445100 |
19 | 7346047140 |
20 | 23213772120 |
21 | 73156412196 |
22 | 229989358500 |
23 | 721474964100 |
24 | 2258832312144 |
25 | 7059480120900 |
26 | 22026886599900 |