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A279393 as a simple table

na(n)
15
229
337
461
573
6101
7113
8137
9173
10181
11193
12197
13241
14269
15277
16293
17349
18389
19409
20449
21509
22521
23541
24593
25613
26617
27653
28661
29673
30677
31701
32757
33761
34773
35821

[5,29,37,61,73,101,113,137,173,181,193,197,241,
 269,277,293,349,389,409,449,509,521,541,593,613,
 617,653,661,673,677,701,757,761,773,821]