n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 8 |
3 | 320 |
4 | 15808 |
5 | 1671808 |
6 | 242521600 |
7 | 52294963968 |
8 | 14823920529408 |
9 | 5496196568825856 |
10 | 2548323017071149056 |
11 | 1453790822661022908416 |
12 | 997862723859007908085760 |
13 | 812410035086507459409412096 |
[0,2,8,320,15808,1671808,242521600,52294963968, 14823920529408,5496196568825856, 2548323017071149056,1453790822661022908416, 997862723859007908085760, 812410035086507459409412096] |