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A038920 as a simple table

na(n)
13
27
311
413
517
619
729
847
953
1067
1171
1279
1389
1497
15101
16109
17137
18149
19151
20157
21167
22179
23181
24191
25193
26199
27211
28227
29229
30233
31239
32257
33263
34281
35293
36311
37313
38317
39331
40347
41383
42397
43421
44439
45457
46463

[3,7,11,13,17,19,29,47,53,67,71,79,89,97,101,109,
 137,149,151,157,167,179,181,191,193,199,211,227,
 229,233,239,257,263,281,293,311,313,317,331,347,
 383,397,421,439,457,463]