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A290368
as a simple table
n
a(n)
1
1
2
1
3
1
4
3
5
6
6
270
7
45
8
63
9
1260
10
31500
11
3150
12
155925
13
103950
[1,1,1,3,6,270,45,63,1260,31500,3150,155925, 103950]