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A274504 as a simple table

na(n)
12
27
311
417
529
631
737
841
943
1047
1153
1267
1373
1489
1597
16103
17107
18109
19149
20163
21167
22179
23197
24199
25211
26223
27241
28257
29271
30277
31311
32313
33317
34331
35347
36353
37367
38373
39379
40383
41389
42409
43421
44433
45439
46443
47479
48491
49499
50503
51521
52541
53547
54557

[2,7,11,17,29,31,37,41,43,47,53,67,73,89,97,103,
 107,109,149,163,167,179,197,199,211,223,241,257,
 271,277,311,313,317,331,347,353,367,373,379,383,
 389,409,421,433,439,443,479,491,499,503,521,541,
 547,557]