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A007519 as a simple table

na(n)
117
241
373
489
597
6113
7137
8193
9233
10241
11257
12281
13313
14337
15353
16401
17409
18433
19449
20457
21521
22569
23577
24593
25601
26617
27641
28673
29761
30769
31809
32857
33881
34929
35937
36953
37977
381009
391033
401049
411097
421129
431153
441193
451201
461217
471249
481289
491297
501321
511361

[17,41,73,89,97,113,137,193,233,241,257,281,313,
 337,353,401,409,433,449,457,521,569,577,593,601,
 617,641,673,761,769,809,857,881,929,937,953,977,
 1009,1033,1049,1097,1129,1153,1193,1201,1217,1249,
 1289,1297,1321,1361]