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A234286
as a simple table
n
a(n)
1
3
2
9
3
13
4
15
5
17
6
21
7
23
8
27
9
29
10
31
11
33
12
35
13
39
14
43
15
45
16
49
[3,9,13,15,17,21,23,27,29,31,33,35,39,43,45,49]
