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A103666 as a simple table

na(n)
15
213
317
419
537
641
743
861
967
1073
1197
12101
13109
14113
15137
16151
17157
18163
19181
20193
21197
22211
23229
24241
25251
26257
27271
28277
29281
30283
31313
32331
33337
34353
35379
36397
37401
38409
39421
40433
41443
42457
43463
44487
45491
46521
47523
48541
49547
50577
51601
52613
53617
54631

[5,13,17,19,37,41,43,61,67,73,97,101,109,113,137,
 151,157,163,181,193,197,211,229,241,251,257,271,
 277,281,283,313,331,337,353,379,397,401,409,421,
 433,443,457,463,487,491,521,523,541,547,577,601,
 613,617,631]