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A337704 as a simple table

na(n)
117
273
389
497
5113
6193
7233
8241
9281
10337
11401
12409
13433
14449
15521
16569
17577
18593
19601
20617
21641
22673
23769
24809
25857
26881
27929
28937
29953
30977
311009
321033
331049
341097
351129
361153
371193
381289
391297
401361
411409
421433
431481
441489
451553
461601
471609
481657
491697
501721
511753

[17,73,89,97,113,193,233,241,281,337,401,409,433,
 449,521,569,577,593,601,617,641,673,769,809,857,
 881,929,937,953,977,1009,1033,1049,1097,1129,1153,
 1193,1289,1297,1361,1409,1433,1481,1489,1553,1601,
 1609,1657,1697,1721,1753]