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A117542
as a simple table
n
a(n)
1
1
2
2
3
6
4
8
5
36
6
16
7
127
8
320
9
581
10
1564
11
13565
12
13760
13
149186
14
773727
15
540538
[1,2,6,8,36,16,127,320,581,1564,13565,13760, 149186,773727,540538]