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A191027 as a simple table

na(n)
13
27
311
441
547
653
767
871
973
1083
11101
12107
13127
14137
15139
16149
17151
18157
19173
20181
21197
22211
23223
24229
25233
26263
27269
28271
29293
30307
31317
32337
33349
34359
35367
36373
37379
38397
39419
40433
41443
42491
43509
44521
45571
46593
47599
48601
49613
50617
51619
52641
53659
54673

[3,7,11,41,47,53,67,71,73,83,101,107,127,137,139,
 149,151,157,173,181,197,211,223,229,233,263,269,
 271,293,307,317,337,349,359,367,373,379,397,419,
 433,443,491,509,521,571,593,599,601,613,617,619,
 641,659,673]