n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 24 |
4 | 192 |
5 | -320 |
6 | -138240 |
7 | -10214400 |
8 | -669204480 |
9 | -43782488064 |
10 | -2628064051200 |
11 | -91419903590400 |
12 | 14288196206592000 |
13 | 5367226212019077120 |
14 | 1259862249808204922880 |
15 | 257126813359346810880000 |
16 | 46529454048255997378560000 |
[1,1,4,24,192,-320,-138240,-10214400,-669204480, -43782488064,-2628064051200,-91419903590400, 14288196206592000,5367226212019077120, 1259862249808204922880,257126813359346810880000, 46529454048255997378560000] |