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A172487 as a simple table

na(n)
13
217
329
441
571
6101
7137
8149
9191
10197
11239
12269
13281
14311
15419
16431
17461
18521
19569
20599
21617
22641
23659
24809
25821
26827
27857
28881
291031
301049
311061
321091
331151
341229
351277
361289
371301
381427
391451
401481
411607
421667
431697
441721
451787
461871
471877
481931
491949
501997

[3,17,29,41,71,101,137,149,191,197,239,269,281,
 311,419,431,461,521,569,599,617,641,659,809,821,
 827,857,881,1031,1049,1061,1091,1151,1229,1277,
 1289,1301,1427,1451,1481,1607,1667,1697,1721,1787,
 1871,1877,1931,1949,1997]