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A263447
as a simple table
n
a(n)
1
1
2
2
3
1
4
1
5
1
6
3
7
3
8
1
9
5
10
3
11
1
12
1
13
4
14
3
15
7
16
6
17
4
18
5
19
4
20
1
21
6
22
12
23
6
24
9
25
12
26
20
[1,2,1,1,1,3,3,1,5,3,1,1,4,3,7,6,4,5,4,1,6,12,6,9, 12,20]