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A005865
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
2
7
2
8
2
9
4
10
6
11
12
12
24
13
32
14
64
15
128
16
256
[1,1,1,1,1,2,2,2,4,6,12,24,32,64,128,256]
