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A093450
as a simple table
n
a(n)
1
2
2
2
3
2
4
2
5
3
6
3
7
2
8
3
9
3
10
2
11
2
12
2
13
2
14
2
15
2
16
2
17
2
[2,2,2,2,3,3,2,3,3,2,2,2,2,2,2,2,2]
