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A291691 as a simple table

na(n)
12
23
35
47
511
613
723
829
937
1043
1147
1253
1373
1479
1583
1697
17113
18131
19151
20173
21179
22181
23191
24197
25211
26223
27233
28239
29251
30263
31277
32281
33283
34307
35317
36337
37353
38359
39367
40383
41397
42419
43431
44439
45443
46457
47461
48463
49467
50487
51491
52499

[2,3,5,7,11,13,23,29,37,43,47,53,73,79,83,97,113,
 131,151,173,179,181,191,197,211,223,233,239,251,
 263,277,281,283,307,317,337,353,359,367,383,397,
 419,431,439,443,457,461,463,467,487,491,499]