A024275 - OEIS

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A024275 as a simple table

n	a(n)
0	0
1	1
2	-6
3	116
4	-4816
5	342736
6	-37272576
7	5748462656
8	-1193465153536
9	320935235205376
10	-108513125117853696
11	45057835625375568896
12	-22540295648947188269056
13	13370560809273727964041216

[0,1,-6,116,-4816,342736,-37272576,5748462656, -1193465153536,320935235205376, -108513125117853696,45057835625375568896, -22540295648947188269056, 13370560809273727964041216]