A009050 - OEIS

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A009050 as a simple table

n	a(n)
0	1
1	0
2	-12
3	120
4	784
5	-95040
6	3292608
7	-9423232
8	-9230042880
9	890079012864
10	-40083887897600
11	-2468650419873792
12	837675174905843712
13	-109581967679961088000
14	5834566862721760149504

[1,0,-12,120,784,-95040,3292608,-9423232, -9230042880,890079012864,-40083887897600, -2468650419873792,837675174905843712, -109581967679961088000,5834566862721760149504]