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A250291 as a simple table

na(n)
129
237
341
447
549
653
767
871
973
10103
11107
12109
13139
14151
15179
16223
17229
18251
19269
20277
21311
22349
23353
24433
25457
26487
27503
28599
29601
30613
31619
32643
33739
34757
35827
36839
371031
381061
391117

[29,37,41,47,49,53,67,71,73,103,107,109,139,151,
 179,223,229,251,269,277,311,349,353,433,457,487,
 503,599,601,613,619,643,739,757,827,839,1031,1061,
 1117]