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A038975 as a simple table

na(n)
12
23
313
417
519
623
729
831
941
1043
1159
1271
1379
1483
1589
16101
17107
18109
19113
20127
21137
22163
23167
24179
25181
26211
27227
28239
29241
30269
31271
32277
33293
34307
35313
36317
37331
38347
39349
40367
41373
42379
43383
44389
45397
46419

[2,3,13,17,19,23,29,31,41,43,59,71,79,83,89,101,
 107,109,113,127,137,163,167,179,181,211,227,239,
 241,269,271,277,293,307,313,317,331,347,349,367,
 373,379,383,389,397,419]