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A160522 as a simple table

na(n)
15
29
313
415
515
619
719
821
925
1027
1127
1229
1329
1433
1533
1635
1739
1839
1941
2043
2143
2245
2345
2445
2547
2651
2755
2857
2957
3057
3157
3257
3357
3459
3561
3661
3765
3865
3965
4065
4169
4269
4371
4471
4573
4675
4775
4877
4977
5081
5181
5281
5381
5485
5589
5689
5789
5889
5989
6091
6191
6291
6391
6491
6593
6697
6799
6899
69103
70103

[5,9,13,15,15,19,19,21,25,27,27,29,29,33,33,35,39,
 39,41,43,43,45,45,45,47,51,55,57,57,57,57,57,57,
 59,61,61,65,65,65,65,69,69,71,71,73,75,75,77,77,
 81,81,81,81,85,89,89,89,89,89,91,91,91,91,91,93,
 97,99,99,103,103]