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A034052 as a simple table

na(n)
15
215
335
451
553
657
775
8115
9135
10151
11153
12157
13175
14315
15351
16355
17359
18395
19511
20513
21517
22531
23535
24539
25553
26557
27571
28575
29579
30593
31597
32715
33751
34755
35759
36795
37935
38953
39957
40975
411115
421135
431151
441153
451157
461175
471315
481351
491355
501359
511395

[5,15,35,51,53,57,75,115,135,151,153,157,175,315,
 351,355,359,395,511,513,517,531,535,539,553,557,
 571,575,579,593,597,715,751,755,759,795,935,953,
 957,975,1115,1135,1151,1153,1157,1175,1315,1351,
 1355,1359,1395]