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A128824 as a simple table

na(n)
15
27
311
413
517
619
723
837
929
1031
1147
1237
1341
1443
1547
1661
1753
1867
1959
2061
21227
2267
2371
2473
2589
2679
2783
2897
2989
30103
31107
3297
33101
34103

[5,7,11,13,17,19,23,37,29,31,47,37,41,43,47,61,53,
 67,59,61,227,67,71,73,89,79,83,97,89,103,107,97,
 101,103]