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 | 24 |
5 | 120 |
6 | 1080 |
7 | 10080 |
8 | 120960 |
9 | 1874880 |
10 | 34473600 |
11 | 738460800 |
12 | 17982518400 |
13 | 489858969600 |
14 | 14834839219200 |
15 | 498452777222400 |
16 | 18583796335104000 |
17 | 768773914900992000 |
18 | 35220800475250790400 |
19 | 1779227869201400217600 |
20 | 98469904378626772992000 |