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A015126 as a simple table

na(n)
11
21
33
43
55
63
77
85
97
105
1111
125
1313
147
1515
1615
1717
187
1919
2015
2113
2211
2323
2415
2525
2613
2719
2813
2929
3015
3131
3217
3325
3417
3535
3613
3737
3819
3935
4017
4141
4213
4343
4425
4535
4623
4747
4817
4943
5025
5151
5235
5353
5419
5541
5635
5737
5829
5959
6017
6161
6231
6337
6451
6565
6625
6767
6851
6969
7035
7171
7235
7373

[1,1,3,3,5,3,7,5,7,5,11,5,13,7,15,15,17,7,19,15,
 13,11,23,15,25,13,19,13,29,15,31,17,25,17,35,13,
 37,19,35,17,41,13,43,25,35,23,47,17,43,25,51,35,
 53,19,41,35,37,29,59,17,61,31,37,51,65,25,67,51,
 69,35,71,35,73]