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A154275 as a simple table

na(n)
15
27
311
413
519
631
737
843
947
1061
1167
1273
1389
14103
15107
16113
17137
18151
19157
20167
21173
22193
23211
24223
25227
26233
27239
28269
29271
30277
31281
32311
33353
34373
35379
36401
37409
38419
39421
40431
41433
42439
43443
44449
45467
46487
47503
48509
49571
50599
51601
52631
53641
54647
55653

[5,7,11,13,19,31,37,43,47,61,67,73,89,103,107,113,
 137,151,157,167,173,193,211,223,227,233,239,269,
 271,277,281,311,353,373,379,401,409,419,421,431,
 433,439,443,449,467,487,503,509,571,599,601,631,
 641,647,653]