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A020619
as a simple table
n
a(n)
1
2
2
5
3
7
4
11
5
13
6
17
7
19
8
23
9
29
10
31
11
41
12
47
13
59
14
61
15
71
16
73
17
79
18
127
19
137
20
167
21
191
22
239
[2,5,7,11,13,17,19,23,29,31,41,47,59,61,71,73,79, 127,137,167,191,239]