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 | 1 |
3 | 1 |
4 | 4 |
5 | 10 |
6 | 42 |
7 | 156 |
8 | 792 |
9 | 3792 |
10 | 22920 |
11 | 133560 |
12 | 938880 |
13 | 6434640 |
14 | 51614640 |
15 | 406344960 |
16 | 3663676800 |
17 | 32560174080 |
18 | 326014657920 |
19 | 3227173488000 |
20 | 35531881459200 |
21 | 387590549472000 |
22 | 4654346740243200 |
23 | 55461310186867200 |
24 | 721387883125324800 |
25 | 9322190319746304000 |