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A126144 as a simple table

na(n)
13
25
37
419
547
673
797
8131
9223
10229
11257
12263
13277
14331
15367
16389
17397
18487
19577
20641
21643
22683
23701
24739
25743
26757
27797
28857
29877
301031
311291
321297
331423
341451
351543
361579
371637
381697
391723
401823
411949
422039
432081
442381
452477
462539
472617
482659
492689
502749

[3,5,7,19,47,73,97,131,223,229,257,263,277,331,
 367,389,397,487,577,641,643,683,701,739,743,757,
 797,857,877,1031,1291,1297,1423,1451,1543,1579,
 1637,1697,1723,1823,1949,2039,2081,2381,2477,2539,
 2617,2659,2689,2749]