A012204 - OEIS

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A012204 as a simple table

n	a(n)
0	1
1	-3
2	57
3	-2755
4	251601
5	-37281923
6	8163849353
7	-2479580033411
8	997801392400929
9	-513852593272870403
10	329599574990913085529
11	-257652341842242812773955
12	241116753509976748759134193

[1,-3,57,-2755,251601,-37281923,8163849353, -2479580033411,997801392400929, -513852593272870403,329599574990913085529, -257652341842242812773955, 241116753509976748759134193]