A012198 - OEIS

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A012198 as a simple table

n	a(n)
0	1
1	-2
2	32
3	-1056
4	77696
5	-8411776
6	1476954112
7	-342658078720
8	110693077745664
9	-44684649940516864
10	23059986721115963392
11	-14340030701132323422208
12	10822861233504969629892608

[1,-2,32,-1056,77696,-8411776,1476954112, -342658078720,110693077745664,-44684649940516864, 23059986721115963392,-14340030701132323422208, 10822861233504969629892608]