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A062574
as a simple table
n
a(n)
1
7
2
11
3
17
4
29
5
31
6
79
7
113
8
131
9
139
10
4357
11
44029
12
76213
13
83663
14
173687
15
336419
16
615997
[7,11,17,29,31,79,113,131,139,4357,44029,76213, 83663,173687,336419,615997]