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A070408 as a simple table

na(n)
01
17
25
313
43
521
615
717
89
919
101
117
125
1313
143
1521
1615
1717
189
1919
201
217
225
2313
243
2521
2615
2717
289
2919
301
317
325
3313
343
3521
3615
3717
389
3919
401
417
425
4313
443
4521
4615
4717
489
4919
501
517
525
5313
543
5521
5615
5717
589
5919
601
617
625
6313
643
6521
6615
6717
689
6919
701
717
725
7313
743
7521
7615
7717
789
7919
801
817
825
8313

[1,7,5,13,3,21,15,17,9,19,1,7,5,13,3,21,15,17,9,
 19,1,7,5,13,3,21,15,17,9,19,1,7,5,13,3,21,15,17,9,
 19,1,7,5,13,3,21,15,17,9,19,1,7,5,13,3,21,15,17,9,
 19,1,7,5,13,3,21,15,17,9,19,1,7,5,13,3,21,15,17,9,
 19,1,7,5,13]