A009166 - OEIS

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A009166 as a simple table

n	a(n)
0	1
1	0
2	12
3	240
4	9296
5	558720
6	47965632
7	5537249536
8	823842474240
9	153119256219648
10	34710583399132160
11	9416311849673895936
12	3009741915237844832256
13	1118809461121375449088000

[1,0,12,240,9296,558720,47965632,5537249536, 823842474240,153119256219648,34710583399132160, 9416311849673895936,3009741915237844832256, 1118809461121375449088000]