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A001070
as a simple table
n
a(n)
1
0
2
0
3
1
4
2
5
36
6
4704
7
8501760
8
267533746176
9
188809932117639168
10
3790336726450693283512320
[0,0,1,2,36,4704,8501760,267533746176, 188809932117639168,3790336726450693283512320]