A024277 - OEIS

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A024277 as a simple table

n	a(n)
0	0
1	1
2	-6
3	176
4	-8176
5	691456
6	-86186496
7	15358324736
8	-3667315849216
9	1135407181398016
10	-441731548179726336
11	211079248633366839296
12	-121507103129359646457856
13	82940335057202543199256576

[0,1,-6,176,-8176,691456,-86186496,15358324736, -3667315849216,1135407181398016, -441731548179726336,211079248633366839296, -121507103129359646457856, 82940335057202543199256576]