n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 24 |
6 | 20 |
7 | 720 |
8 | 630 |
9 | 13440 |
10 | 36288 |
11 | 3628800 |
12 | 277200 |
13 | 479001600 |
14 | 444787200 |
15 | 5811886080 |
16 | 20432412000 |
17 | 20922789888000 |
18 | 1097800704000 |
19 | 6402373705728000 |
20 | 304112751022080 |
21 | 115852476579840000 |
22 | 2322315553259520000 |
[1,1,2,3,24,20,720,630,13440,36288,3628800,277200, 479001600,444787200,5811886080,20432412000, 20922789888000,1097800704000,6402373705728000, 304112751022080,115852476579840000, 2322315553259520000] |