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 | 0 |
3 | 6 |
4 | 0 |
5 | 60 |
6 | 2520 |
7 | 1680 |
8 | 181440 |
9 | 6138720 |
10 | 18295200 |
11 | 1444988160 |
12 | 46443196800 |
13 | 357015859200 |
14 | 25016537145600 |
15 | 818965321574400 |
16 | 12259854032025600 |
17 | 815066633667686400 |
18 | 28461465853402982400 |
19 | 691667282863484928000 |
20 | 45198900807076912896000 |
21 | 1739192274792359202816000 |
22 | 60318174486002275287244800 |