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A156107 as a simple table

na(n)
15
27
313
419
523
629
737
847
953
1067
1179
1283
1389
1497
15107
16113
17127
18137
19139
20149
21163
22167
23173
24193
25223
26229
27239
28257
29277
30313
31317
32347
33359
34379
35397
36419
37433
38443
39449
40457
41463
42487
43499
44503
45509
46547
47557
48599
49607
50613
51617
52643
53653
54677
55683

[5,7,13,19,23,29,37,47,53,67,79,83,89,97,107,113,
 127,137,139,149,163,167,173,193,223,229,239,257,
 277,313,317,347,359,379,397,419,433,443,449,457,
 463,487,499,503,509,547,557,599,607,613,617,643,
 653,677,683]