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A191066 as a simple table

na(n)
17
219
341
453
561
671
773
883
989
1097
11103
12107
13109
14127
15139
16173
17181
18191
19193
20197
21211
22223
23227
24229
25239
26281
27293
28311
29313
30317
31331
32337
33347
34349
35359
36367
37379
38401
39421
40431
41433
42443
43449
44457
45463
46467
47479
48487
49499
50521
51541
52557
53563
54569

[7,19,41,53,61,71,73,83,89,97,103,107,109,127,139,
 173,181,191,193,197,211,223,227,229,239,281,293,
 311,313,317,331,337,347,349,359,367,379,401,421,
 431,433,443,449,457,463,467,479,487,499,521,541,
 557,563,569]