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A226977
as a simple table
n
a(n)
1
7
2
8
3
11
4
17
5
23
6
29
7
41
8
47
9
59
10
71
11
239
12
359
13
419
14
839
[7,8,11,17,23,29,41,47,59,71,239,359,419,839]