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A168275
as a simple table
n
a(n)
1
3
2
4
3
7
4
6
5
7
6
8
7
11
8
11
9
11
10
12
11
12
12
14
13
15
14
15
15
17
[3,4,7,6,7,8,11,11,11,12,12,14,15,15,17]