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A109515 as a simple table

na(n)
12
25
313
417
529
631
737
841
943
1053
1159
1261
1373
1489
1597
16101
17109
18113
19127
20137
21149
22157
23173
24181
25193
26197
27223
28229
29233
30241
31251
32257
33269
34277
35281
36283
37293
38307
39313
40317
41337
42347
43349
44353
45359
46373
47379
48389
49397
50401
51409
52421
53433
54439
55443
56449

[2,5,13,17,29,31,37,41,43,53,59,61,73,89,97,101,
 109,113,127,137,149,157,173,181,193,197,223,229,
 233,241,251,257,269,277,281,283,293,307,313,317,
 337,347,349,353,359,373,379,389,397,401,409,421,
 433,439,443,449]