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A377279
as a simple table
n
a(n)
1
1
2
2
3
3
4
2
5
3
6
4
7
3
8
3
9
4
10
4
11
3
12
4
13
3
14
4
15
5
16
3
17
4
18
5
19
2
[1,2,3,2,3,4,3,3,4,4,3,4,3,4,5,3,4,5,2]