A180654 - OEIS

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A180654 as a simple table

n	a(n)
0	1
1	1
2	3
3	-13
4	-321
5	13434
6	103022
7	-60330726
8	4269491916
9	422156508320
10	-186525936386808
11	22409109754552542
12	6675208135884604731
13	-4757044765774305527628
14	1070232275818826170463982

[1,1,3,-13,-321,13434,103022,-60330726,4269491916, 422156508320,-186525936386808,22409109754552542, 6675208135884604731,-4757044765774305527628, 1070232275818826170463982]