A012623 - OEIS

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A012623 as a simple table

n	a(n)
0	2
1	-12
2	118
3	168
4	-314838
5	60653340
6	-12586913250
7	3145598341200
8	-959740793965230
9	355199264316850500
10	-157666664319013951290
11	82936567630998372808440
12	-51114833501551851944029830

[2,-12,118,168,-314838,60653340,-12586913250, 3145598341200,-959740793965230,355199264316850500, -157666664319013951290,82936567630998372808440, -51114833501551851944029830]