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 | 0 |
4 | 4 |
5 | 10 |
6 | 40 |
7 | 210 |
8 | 784 |
9 | 5040 |
10 | 40200 |
11 | 369600 |
12 | 5285280 |
13 | 72072000 |
14 | 1006889520 |
15 | 14760345600 |
16 | 210510263040 |
17 | 3131345817600 |
18 | 49229619129600 |
19 | 818940523564800 |
20 | 15054020163619200 |
21 | 301204611031564800 |
22 | 6455999452413772800 |
23 | 146587705490513548800 |