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A191065 as a simple table

na(n)
15
27
311
417
519
637
743
853
961
1067
1179
1283
1389
1497
15103
16107
17109
18113
19137
20149
21157
22181
23191
24199
25227
26229
27241
28251
29263
30281
31283
32293
33313
34337
35359
36367
37373
38379
39383
40389
41401
42419
43421
44431
45433
46457
47467
48479
49503
50521
51523
52557
53563
54569
55571

[5,7,11,17,19,37,43,53,61,67,79,83,89,97,103,107,
 109,113,137,149,157,181,191,199,227,229,241,251,
 263,281,283,293,313,337,359,367,373,379,383,389,
 401,419,421,431,433,457,467,479,503,521,523,557,
 563,569,571]