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A040049 as a simple table

na(n)
12
23
35
47
511
617
719
823
929
1041
1147
1253
1359
1471
1573
1683
1789
18101
19107
20113
21131
22137
23149
24157
25167
26173
27179
28181
29191
30197
31223
32227
33233
34239
35251
36257
37263
38269
39281
40293
41311
42313
43317
44331
45337
46347
47353

[2,3,5,7,11,17,19,23,29,41,47,53,59,71,73,83,89,
 101,107,113,131,137,149,157,167,173,179,181,191,
 197,223,227,233,239,251,257,263,269,281,293,311,
 313,317,331,337,347,353]