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A240031 as a simple table

na(n)
15
217
323
425
541
647
753
859
971
1083
11101
12107
13113
14125
15131
16137
17149
18167
19173
20179
21191
22197
23227
24239
25251
26257
27263
28269
29281
30289
31293
32311
33317
34347
35353
36359
37383
38389
39401
40419
41443
42449
43461
44467
45479
46503
47509
48529
49557
50563
51569
52587
53593

[5,17,23,25,41,47,53,59,71,83,101,107,113,125,131,
 137,149,167,173,179,191,197,227,239,251,257,263,
 269,281,289,293,311,317,347,353,359,383,389,401,
 419,443,449,461,467,479,503,509,529,557,563,569,
 587,593]