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A393305 as a simple table

na(n)
113
21
311
41
527
61
725
81
915
101
1113
121
1321
141
1519
161
1713
181
1911
201
2145
221
2343
241
2517
261
2715
281
2939
301
3137
321
3313
341
3511
361
3729
381
3927
401
4115
421
4313
441
4523
461
4721
481
4913
501
5111
521
5335
541
5533
561
5719
581
5917
601
6129
621
6327
641
6513
661
6711
681
6927
701
7125
721
7315
741

[13,1,11,1,27,1,25,1,15,1,13,1,21,1,19,1,13,1,11,
 1,45,1,43,1,17,1,15,1,39,1,37,1,13,1,11,1,29,1,27,
 1,15,1,13,1,23,1,21,1,13,1,11,1,35,1,33,1,19,1,17,
 1,29,1,27,1,13,1,11,1,27,1,25,1,15,1]