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A028950
as a simple table
n
a(n)
0
0
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
1
10
1
11
1
12
2
13
1
14
2
15
2
16
2
17
2
18
2
19
2
20
2
21
2
22
2
23
3
24
3
25
2
26
3
27
3
28
3
29
3
30
3
31
3
32
4
33
3
[0,1,1,1,1,1,1,1,1,1,1,1,2,1,2,2,2,2,2,2,2,2,2,3, 3,2,3,3,3,3,3,3,4,3]