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A038902 as a simple table

na(n)
12
23
311
417
519
631
737
841
943
1047
1161
1273
1379
1489
1597
16101
17113
18127
19131
20137
21157
22163
23191
24193
25211
26229
27251
28263
29269
30271
31293
32307
33311
34317
35331
36337
37359
38367
39379
40389
41409
42421
43433
44443
45449
46461

[2,3,11,17,19,31,37,41,43,47,61,73,79,89,97,101,
 113,127,131,137,157,163,191,193,211,229,251,263,
 269,271,293,307,311,317,331,337,359,367,379,389,
 409,421,433,443,449,461]