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A121573 as a simple table

na(n)
11
23
35
47
53
61
73
83
97
105
113
125
133
141
1511
1613
1721
1825
1923
2023
2131
2233
2343
2435
2537
2633
2729
2829
2933
3031
3135
3233
3343
3447
3549
3651
3751
3853
3949
4051
4159
4263
4365
4461
4563
4659
4763
4865
4955
5043
5139
5235
5339
5439
5543
5641
5751
5843
5945
6041
6133
6235
6333
6431
6531
6635
6733
6829
6925
7015
717
725
739
747
7517
7615
7731
7835
7933
8035
8143
8245
8347
8453
8555
8663
8767
8859
8951
9063
9161

[1,3,5,7,3,1,3,3,7,5,3,5,3,1,11,13,21,25,23,23,31,
 33,43,35,37,33,29,29,33,31,35,33,43,47,49,51,51,
 53,49,51,59,63,65,61,63,59,63,65,55,43,39,35,39,
 39,43,41,51,43,45,41,33,35,33,31,31,35,33,29,25,
 15,7,5,9,7,17,15,31,35,33,35,43,45,47,53,55,63,67,
 59,51,63,61]