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 | 840 |
8 | 181440 |
9 | 6063120 |
10 | 11642400 |
11 | 1437337440 |
12 | 44626982400 |
13 | 254278664640 |
14 | 24575197046400 |
15 | 756010400745600 |
16 | 9284429893939200 |
17 | 784770965801222400 |
18 | 25067890370095372800 |
19 | 541810656586725926400 |
20 | 42351473267452597248000 |
21 | 1461224653966598493772800 |
22 | 48020130717168717960652800 |