n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | -2 |
4 | -8 |
5 | -24 |
6 | 16 |
7 | 400 |
8 | -3072 |
9 | -38528 |
10 | -18944 |
11 | 1287936 |
12 | 17843200 |
13 | 149045248 |
14 | -188786688 |
15 | -12007184384 |
16 | -1265929355264 |
17 | -20275964313600 |
18 | 3871935889408 |
19 | 2355175169523712 |
20 | 45658709327609856 |
21 | 565591105847689216 |
22 | -1448855443865600000 |
[1,1,0,-2,-8,-24,16,400,-3072,-38528,-18944, 1287936,17843200,149045248,-188786688, -12007184384,-1265929355264,-20275964313600, 3871935889408,2355175169523712,45658709327609856, 565591105847689216,-1448855443865600000] |