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A319496 as a simple table

na(n)
12
23
37
413
519
637
753
861
989
1091
11113
12131
13151
14223
15247
16251
17281
18299
19311
20359
21377
22427
23463
24503
25593
26611
27659
28689
29703
30719
31791
32827
33851
34863
35923
36953
371069
381073
391159
401163
411291
421321
431339
441363
451511
461619
471703
481733
491739
501757
511769

[2,3,7,13,19,37,53,61,89,91,113,131,151,223,247,
 251,281,299,311,359,377,427,463,503,593,611,659,
 689,703,719,791,827,851,863,923,953,1069,1073,
 1159,1163,1291,1321,1339,1363,1511,1619,1703,1733,
 1739,1757,1769]