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A038983 as a simple table

na(n)
12
23
35
413
517
623
729
831
947
1059
1183
1289
1397
14109
15127
16131
17151
18167
19181
20199
21223
22229
23241
24251
25283
26293
27307
28311
29317
30331
31337
32347
33349
34353
35359
36367
37373
38379
39389
40401
41421
42457
43461
44463
45491
46503

[2,3,5,13,17,23,29,31,47,59,83,89,97,109,127,131,
 151,167,181,199,223,229,241,251,283,293,307,311,
 317,331,337,347,349,353,359,367,373,379,389,401,
 421,457,461,463,491,503]