n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 6 |
4 | 70 |
5 | 1080 |
6 | 21162 |
7 | 501060 |
8 | 13904152 |
9 | 442241856 |
10 | 15855648120 |
11 | 632501646480 |
12 | 27781645311216 |
13 | 1332152096109120 |
14 | 69237728070951888 |
15 | 3876953348374273440 |
16 | 232666700169003442560 |
17 | 14897335773169370787840 |
18 | 1013656610215024983681408 |
[1,0,1,6,70,1080,21162,501060,13904152,442241856, 15855648120,632501646480,27781645311216, 1332152096109120,69237728070951888, 3876953348374273440,232666700169003442560, 14897335773169370787840,1013656610215024983681408] |