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A103958
as a simple table
n
a(n)
0
2
1
2
2
1
3
1
4
2
5
2
6
1
7
3
8
2
9
3
10
2
11
2
12
2
13
2
14
3
15
2
16
4
17
6
18
5
19
6
20
2
21
4
22
3
23
3
24
4
25
4
[2,2,1,1,2,2,1,3,2,3,2,2,2,2,3,2,4,6,5,6,2,4,3,3, 4,4]