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A015886
as a simple table
n
a(n)
0
1
1
2
2
3
3
2
4
3
5
2
6
5
7
74
8
3
9
2
10
3
11
2
12
5
13
4418
14
3
15
2
16
3
17
2
18
5
19
6
20
3
21
2
22
7
[1,2,3,2,3,2,5,74,3,2,3,2,5,4418,3,2,3,2,5,6,3,2, 7]