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A038980 as a simple table

na(n)
12
217
319
423
531
637
743
847
959
1061
1179
1283
13101
14107
15109
16127
17137
18149
19157
20167
21173
22179
23181
24191
25193
26197
27211
28223
29227
30257
31263
32269
33271
34281
35307
36313
37317
38347
39383
40401
41421
42433
43443
44449
45457

[2,17,19,23,31,37,43,47,59,61,79,83,101,107,109,
 127,137,149,157,167,173,179,181,191,193,197,211,
 223,227,257,263,269,271,281,307,313,317,347,383,
 401,421,433,443,449,457]