n | a(n) |
---|---|
4 | 0 |
5 | 60 |
6 | 720 |
7 | 7560 |
8 | 80640 |
9 | 907200 |
10 | 10886400 |
11 | 139708800 |
12 | 1916006400 |
13 | 28021593600 |
14 | 435891456000 |
15 | 7192209024000 |
16 | 125536739328000 |
17 | 2311968282624000 |
18 | 44816615940096000 |
19 | 912338253066240000 |
20 | 19463216065413120000 |
21 | 434273008459530240000 |
22 | 10116006549998469120000 |
[0,60,720,7560,80640,907200,10886400,139708800, 1916006400,28021593600,435891456000,7192209024000, 125536739328000,2311968282624000, 44816615940096000,912338253066240000, 19463216065413120000,434273008459530240000, 10116006549998469120000] |