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 | 1 |
4 | 8 |
5 | 20 |
6 | 10 |
7 | 280 |
8 | 3360 |
9 | 20440 |
10 | 67200 |
11 | 462000 |
12 | 7407400 |
13 | 73673600 |
14 | 482081600 |
15 | 3364761400 |
16 | 47311264000 |
17 | 657536880000 |
18 | 6586994814400 |
19 | 58707179731200 |
20 | 740032028736000 |
21 | 11832726841936000 |
22 | 161121297104768000 |
23 | 1857897194273120000 |
24 | 23875495204536976000 |