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A038900 as a simple table

na(n)
13
27
329
431
541
643
747
853
961
1071
1173
1289
1397
14101
15107
16131
17137
18139
19151
20157
21167
22173
23179
24181
25193
26211
27223
28239
29241
30251
31269
32271
33277
34281
35283
36347
37353
38359
39373
40383
41389
42401
43409
44419
45431
46443

[3,7,29,31,41,43,47,53,61,71,73,89,97,101,107,131,
 137,139,151,157,167,173,179,181,193,211,223,239,
 241,251,269,271,277,281,283,347,353,359,373,383,
 389,401,409,419,431,443]