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A350118
as a simple table
n
a(n)
1
2
2
3
3
7
4
17
5
19
6
31
7
47
8
383
9
2897
10
3061
11
5297
12
7013
13
10223
[2,3,7,17,19,31,47,383,2897,3061,5297,7013,10223]
