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A005855
as a simple table
n
a(n)
7
1
8
1
9
1
10
1
11
1
12
2
13
2
14
2
15
3
16
4
17
5
18
6
19
8
20
10
21
13
22
16
[1,1,1,1,1,2,2,2,3,4,5,6,8,10,13,16]
