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A191084 as a simple table

na(n)
15
219
323
431
537
643
753
859
961
1071
1173
1279
1383
1497
15107
16127
17149
18157
19163
20167
21173
22179
23193
24197
25211
26227
27229
28233
29239
30257
31271
32281
33307
34331
35337
36347
37353
38367
39379
40383
41401
42409
43419
44421
45431
46433
47509
48521
49541
50557
51577
52587
53593
54601
55607

[5,19,23,31,37,43,53,59,61,71,73,79,83,97,107,127,
 149,157,163,167,173,179,193,197,211,227,229,233,
 239,257,271,281,307,331,337,347,353,367,379,383,
 401,409,419,421,431,433,509,521,541,557,577,587,
 593,601,607]