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A005854
as a simple table
n
a(n)
6
1
7
1
8
1
9
1
10
1
11
2
12
2
13
2
14
2
15
3
16
3
17
3
18
4
19
4
20
5
21
7
22
7
23
8
24
9
25
10
26
13
27
14
28
16
29
20
30
25
31
31
32
31
[1,1,1,1,1,2,2,2,2,3,3,3,4,4,5,7,7,8,9,10,13,14, 16,20,25,31,31]