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A216745 as a simple table

na(n)
15
27
313
417
523
629
731
837
941
1043
1147
1253
1361
1471
1579
1697
17101
18103
19109
20113
21127
22137
23149
24151
25157
26167
27173
28181
29191
30193
31197
32199
33211
34223
35229
36239
37241
38263
39269
40271
41277
42281
43293
44311
45313
46317
47337
48349
49359
50367
51373
52379
53383
54389
55397
56401
57409
58421
59431
60433

[5,7,13,17,23,29,31,37,41,43,47,53,61,71,79,97,
 101,103,109,113,127,137,149,151,157,167,173,181,
 191,193,197,199,211,223,229,239,241,263,269,271,
 277,281,293,311,313,317,337,349,359,367,373,379,
 383,389,397,401,409,421,431,433]