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A109612 as a simple table

na(n)
13
29
321
423
541
647
751
857
963
1081
1183
1293
13101
14111
15119
16123
17129
18131
19159
20171
21179
22189
23201
24203
25207
26221
27249
28257
29263
30267
31269
32273
33279
34281
35293
36351
37357
38371
39381
40383
41389
42417
43449
44453
45483
46491
47497
48501
49507
50519
51531
52533
53537
54543
55549

[3,9,21,23,41,47,51,57,63,81,83,93,101,111,119,
 123,129,131,159,171,179,189,201,203,207,221,249,
 257,263,267,269,273,279,281,293,351,357,371,381,
 383,389,417,449,453,483,491,497,501,507,519,531,
 533,537,543,549]