A012037 - OEIS

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A012037 as a simple table

n	a(n)
0	1
1	-4
2	84
3	-4320
4	410640
5	-62424000
6	13882209600
7	-4250758886400
8	1715097849504000
9	-881945575315584000
10	563062441711086720000
11	-436991853893041873920000
12	405186856780938968885760000

[1,-4,84,-4320,410640,-62424000,13882209600, -4250758886400,1715097849504000, -881945575315584000,563062441711086720000, -436991853893041873920000, 405186856780938968885760000]