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A327531 as a simple table

na(n)
11
21
33
41
55
61
77
81
99
101
1111
121
1313
141
151
161
1717
181
1919
201
2121
221
2323
241
2525
261
2727
281
2929
301
3131
321
331
341
351
361
3737
381
3939
401
4141
421
4343
441
451
461
4747
481
4949
501
511
521
5353
541
551
561
5757
581
5959
601
6161
621
6363
641
6565
661
6767
681
691
701
7171
721
7373
741
751
761
771
781

[1,1,3,1,5,1,7,1,9,1,11,1,13,1,1,1,17,1,19,1,21,1,
 23,1,25,1,27,1,29,1,31,1,1,1,1,1,37,1,39,1,41,1,
 43,1,1,1,47,1,49,1,1,1,53,1,1,1,57,1,59,1,61,1,63,
 1,65,1,67,1,1,1,71,1,73,1,1,1,1,1]