n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 24 |
6 | 144 |
7 | 1008 |
8 | 8064 |
9 | 72576 |
10 | 653184 |
11 | 7185024 |
12 | 86220288 |
13 | 1120863744 |
14 | 15692092416 |
15 | 237124952064 |
16 | 3793999233024 |
17 | 64497986961408 |
18 | 1160963765305344 |
19 | 22058311540801536 |
20 | 441004037348818944 |
21 | 9261084784325197824 |
22 | 203743865255154352128 |
23 | 4686108900868550098944 |
[0,0,0,0,0,24,144,1008,8064,72576,653184,7185024, 86220288,1120863744,15692092416,237124952064, 3793999233024,64497986961408,1160963765305344, 22058311540801536,441004037348818944, 9261084784325197824,203743865255154352128, 4686108900868550098944] |