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A163385 as a simple table

na(n)
15
27
313
417
523
637
753
867
979
1083
1197
12107
13157
14193
15223
16277
17347
18353
19367
20433
21443
22479
23487
24499
25569
26577
27599
28647
29653
30773
31797
32853
33907
34937
351087
361103
371123
381259
391277
401367
411409
421423
431427
441549
451553
461747
471889
482069
492153
502237
512267

[5,7,13,17,23,37,53,67,79,83,97,107,157,193,223,
 277,347,353,367,433,443,479,487,499,569,577,599,
 647,653,773,797,853,907,937,1087,1103,1123,1259,
 1277,1367,1409,1423,1427,1549,1553,1747,1889,2069,
 2153,2237,2267]