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A038898 as a simple table

na(n)
13
25
317
431
537
647
753
859
961
1071
1189
1297
13109
14113
15127
16131
17137
18139
19149
20151
21157
22163
23167
24179
25181
26211
27223
28229
29239
30241
31271
32281
33293
34307
35311
36313
37331
38337
39347
40373
41389
42401
43421
44433
45439

[3,5,17,31,37,47,53,59,61,71,89,97,109,113,127,
 131,137,139,149,151,157,163,167,179,181,211,223,
 229,239,241,271,281,293,307,311,313,331,337,347,
 373,389,401,421,433,439]