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A326159
as a simple table
n
a(n)
1
1
2
3
3
9
4
85
5
1136
6
39808
7
3984553
8
1000921717
9
666253766253
10
1113066644514662
[1,3,9,85,1136,39808,3984553,1000921717, 666253766253,1113066644514662]