A009529 - OEIS

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A009529 as a simple table

n	a(n)
0	1
1	-4
2	-79664
3	-627244864
4	-10054978651904
5	-281464457981584384
6	-9106562752258155720704
7	743620567656757236530855936
8	627496952440053395297142177857536

[1,-4,-79664,-627244864,-10054978651904, -281464457981584384,-9106562752258155720704, 743620567656757236530855936, 627496952440053395297142177857536]