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 | 4 |
5 | 10 |
6 | 40 |
7 | 210 |
8 | 2464 |
9 | 20160 |
10 | 178800 |
11 | 1755600 |
12 | 22323840 |
13 | 289729440 |
14 | 3950069760 |
15 | 57127870800 |
16 | 921032555520 |
17 | 15786602832000 |
18 | 284810759251200 |
19 | 5394363163862400 |
20 | 108742028591923200 |
21 | 2312415679065811200 |
22 | 51543520889668684800 |
23 | 1199641884471310156800 |