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A114970
as a simple table
n
a(n)
1
5
2
7
3
17
4
25
5
43
6
61
7
69
8
73
9
105
10
111
11
117
12
123
13
135
14
141
15
171
16
219
17
231
18
241
19
309
20
321
21
543
22
739
[5,7,17,25,43,61,69,73,105,111,117,123,135,141, 171,219,231,241,309,321,543,739]