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A338339 as a simple table

na(n)
12
25
37
411
517
631
737
841
953
1067
1171
1279
1389
14101
15109
16131
17151
18173
19181
20197
21199
22211
23241
24257
25263
26277
27281
28293
29311
30347
31359
32383
33421
34431
35443
36487
37521
38523
39593
40607
41643
42659
43701
44709
45739
46809
47811
48827
49883
50971
51983
521009
531019
541031
551039
561061
571069
581109

[2,5,7,11,17,31,37,41,53,67,71,79,89,101,109,131,
 151,173,181,197,199,211,241,257,263,277,281,293,
 311,347,359,383,421,431,443,487,521,523,593,607,
 643,659,701,709,739,809,811,827,883,971,983,1009,
 1019,1031,1039,1061,1069,1109]