A012036 - OEIS

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A012036 as a simple table

n	a(n)
0	1
1	0
2	-4
3	32
4	80
5	-34048
6	5048512
7	-984048128
8	246504417536
9	-76892124225536
10	29350173573487616
11	-13506119868179701760
12	7388967312556159062016
13	-4745632815309786449379328
14	3538391474251613805070172160

[1,0,-4,32,80,-34048,5048512,-984048128, 246504417536,-76892124225536,29350173573487616, -13506119868179701760,7388967312556159062016, -4745632815309786449379328, 3538391474251613805070172160]