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A079017
as a simple table
n
a(n)
1
3
2
5
3
17
4
23
5
29
6
47
7
83
8
89
9
113
10
137
11
149
12
197
13
359
14
509
15
1997
[3,5,17,23,29,47,83,89,113,137,149,197,359,509, 1997]