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A327819
as a simple table
n
a(n)
1
3
2
5
3
7
4
13
5
17
6
19
7
23
8
43
9
47
10
53
11
59
12
61
13
67
14
71
15
73
[3,5,7,13,17,19,23,43,47,53,59,61,67,71,73]