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A269111
as a simple table
n
a(n)
1
2
2
3
3
2
4
2
5
3
6
2
7
2
8
3
9
2
10
2
11
2
12
2
13
2
14
2
[2,3,2,2,3,2,2,3,2,2,2,2,2,2]