n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 720 |
7 | 5040 |
8 | 45360 |
9 | 498960 |
10 | 6486480 |
11 | 110270160 |
12 | 2095133040 |
13 | 41902660800 |
14 | 963761198400 |
15 | 26985313555200 |
16 | 782574093100800 |
17 | 24259796886124800 |
18 | 897612484786617600 |
19 | 36802111876251321600 |
20 | 1582490810678806828800 |
21 | 74377068101903920953600 |
22 | 3941984609400907810540800 |
[1,2,6,24,120,720,5040,45360,498960,6486480, 110270160,2095133040,41902660800,963761198400, 26985313555200,782574093100800,24259796886124800, 897612484786617600,36802111876251321600, 1582490810678806828800,74377068101903920953600, 3941984609400907810540800] |