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A243768 as a simple table

na(n)
17
211
313
417
519
631
737
841
943
1059
1161
1267
1373
1479
1583
1689
1797
18103
19107
20109
21113
22127
23131
24137
25151
26157
27179
28181
29193
30199
31211
32223
33227
34229
35233
36251
37257
38271
39277
40281
41283
42331
43347
44349
45353
46367
47373
48397
49401
50419
51421
52433
53439
54443
55449
56457
57463
58467
59487
60491
61521
62523
63541
64547
65563
66569

[7,11,13,17,19,31,37,41,43,59,61,67,73,79,83,89,
 97,103,107,109,113,127,131,137,151,157,179,181,
 193,199,211,223,227,229,233,251,257,271,277,281,
 283,331,347,349,353,367,373,397,401,419,421,433,
 439,443,449,457,463,467,487,491,521,523,541,547,
 563,569]