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A346676 as a simple table

na(n)
15
27
311
413
517
619
725
829
931
1035
1141
1243
1359
1467
1573
1683
1785
1889
1991
2097
21113
22131
23137
24145
25155
26209
27245
28247
29251
30259
31265
32275
33283
34307
35337
36371
37499
38515
39521
40539
41593
42731
43733
44737
45745
46755
47761
48793
49857
50985
511027
521033
531051
541105
551241

[5,7,11,13,17,19,25,29,31,35,41,43,59,67,73,83,85,
 89,91,97,113,131,137,145,155,209,245,247,251,259,
 265,275,283,307,337,371,499,515,521,539,593,731,
 733,737,745,755,761,793,857,985,1027,1033,1051,
 1105,1241]