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A159303
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
5
6
5
7
7
8
6
9
6
10
7
11
9
12
7
13
9
14
9
15
8
16
8
17
10
18
8
19
11
20
9
[1,2,3,4,5,5,7,6,6,7,9,7,9,9,8,8,10,8,11,9]