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A173830 as a simple table

na(n)
12
23
35
413
519
631
737
841
959
1071
1197
12103
13137
14139
15151
16197
17241
18313
19331
20389
21401
22419
23487
24499
25563
26569
27577
28593
29683
30701
31769
32811
33877
34881
35907
36911
371019
381031
391129
401153
411283
421291
431409
441433
451451
461567
471579
481597
491627
501741
511747
521759

[2,3,5,13,19,31,37,41,59,71,97,103,137,139,151,
 197,241,313,331,389,401,419,487,499,563,569,577,
 593,683,701,769,811,877,881,907,911,1019,1031,
 1129,1153,1283,1291,1409,1433,1451,1567,1579,1597,
 1627,1741,1747,1759]