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A258653 as a simple table

na(n)
15
27
37
411
513
613
713
817
917
1019
1117
1219
1323
1423
1523
1623
1729
1831
1929
2031
2137
2237
2337
2441
2543
2643
2743
2841
2943
3047
3147
3247
3347
3441
3553
3653
3753
3853
3943
4053
4159
4247
4359
4461
4547
4653
4759
4859
4967
5061
5161
5267
5373
5473
5573
5671
5767
5879
5979
6071
6183
6283
6383
6483
6579
6683

[5,7,7,11,13,13,13,17,17,19,17,19,23,23,23,23,29,
 31,29,31,37,37,37,41,43,43,43,41,43,47,47,47,47,
 41,53,53,53,53,43,53,59,47,59,61,47,53,59,59,67,
 61,61,67,73,73,73,71,67,79,79,71,83,83,83,83,79,
 83]