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A115279 as a simple table

na(n)
15
229
337
453
561
665
765
873
985
1085
1189
1297
13169
14185
15205
16221
17233
18241
19277
20281
21289
22305
23305
24325
25337
26349
27353
28373
29377
30377
31389
32397
33409
34425
35433
36445
37449
38457
39461
40481
41493
42493
43505
44505
45509
46521
47533
48541
49545
50557
51565
52565
53569
54593
55601

[5,29,37,53,61,65,65,73,85,85,89,97,169,185,205,
 221,233,241,277,281,289,305,305,325,337,349,353,
 373,377,377,389,397,409,425,433,445,449,457,461,
 481,493,493,505,505,509,521,533,541,545,557,565,
 565,569,593,601]