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A116957
as a simple table
n
a(n)
1
5
2
15
3
135
4
175
5
315
6
735
7
1395
8
1935
9
3195
10
3915
11
9135
12
9315
[5,15,135,175,315,735,1395,1935,3195,3915,9135, 9315]
