A009604 - OEIS

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A009604 as a simple table

n	a(n)
0	1
1	0
2	12
3	280
4	11536
5	703296
6	59653440
7	6715007104
8	967972497664
9	173764741920768
10	37986612815698944
11	9929613975171315712
12	3056815269626584895488
13	1094148286150918628229120

[1,0,12,280,11536,703296,59653440,6715007104, 967972497664,173764741920768,37986612815698944, 9929613975171315712,3056815269626584895488, 1094148286150918628229120]