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A143387
as a simple table
n
a(n)
1
3
2
53
3
11
4
17
5
317
6
89
7
1259
8
2543
9
7517
10
16217
11
15107
12
33119
13
60611
14
671063
15
2648057
[3,53,11,17,317,89,1259,2543,7517,16217,15107, 33119,60611,671063,2648057]