A012208 - OEIS

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A012208 as a simple table

n	a(n)
0	1
1	-6
2	184
3	-13136
4	1679488
5	-335723264
6	96492653568
7	-37665610561536
8	19158060131778560
9	-12304193595906129920
10	9734505561510299566080
11	-9299736312230986726768640
12	10553185490408007072659537920

[1,-6,184,-13136,1679488,-335723264,96492653568, -37665610561536,19158060131778560, -12304193595906129920,9734505561510299566080, -9299736312230986726768640, 10553185490408007072659537920]