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A216838 as a simple table

na(n)
17
217
323
431
541
643
747
871
973
1079
1189
1297
13103
14109
15113
16127
17137
18151
19157
20167
21191
22193
23199
24223
25229
26233
27239
28241
29251
30257
31263
32271
33277
34281
35283
36307
37311
38313
39331
40337
41353
42359
43367
44383
45397
46401
47409
48431
49433
50439
51449
52457
53463
54479

[7,17,23,31,41,43,47,71,73,79,89,97,103,109,113,
 127,137,151,157,167,191,193,199,223,229,233,239,
 241,251,257,263,271,277,281,283,307,311,313,331,
 337,353,359,367,383,397,401,409,431,433,439,449,
 457,463,479]