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A157437 as a simple table

na(n)
15
27
311
429
531
653
759
873
979
1083
1197
12101
13103
14107
15127
16131
17149
18151
19173
20179
21193
22197
23199
24223
25227
26241
27251
28269
29271
30293
31313
32317
33337
34347
35367
36389
37409
38419
39433
40439
41443
42457
43461
44463
45467
46487
47491
48509
49557
50563
51577
52587
53601
54607
55631

[5,7,11,29,31,53,59,73,79,83,97,101,103,107,127,
 131,149,151,173,179,193,197,199,223,227,241,251,
 269,271,293,313,317,337,347,367,389,409,419,433,
 439,443,457,461,463,467,487,491,509,557,563,577,
 587,601,607,631]