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A091252 as a simple table

na(n)
12
231
373
487
5117
6283
7313
8319
9375
10379
11395
12415
13419
14433
15445
16471
17477
18499
19505
20515
21535
22587
23613
24665
25769
26841
27929

[2,31,73,87,117,283,313,319,375,379,395,415,419,
 433,445,471,477,499,505,515,535,587,613,665,769,
 841,929]