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A161825 as a simple table

na(n)
11
21
33
41
55
63
77
81
99
105
111
123
131
147
1515
161
1717
189
191
205
2121
221
231
243
251
261
2727
287
291
3015
3131
321
3333
3417
357
369
371
381
393
405
411
4221
431
441
4545
461
471
483
497
501
5151
521
531
5427
551
567
573
581
591
6015
611
6231
6363
641
6565
6633
671
6817
693
707
711
729
7373
741
7515
761
771
783
791
805
813
821
831
8421
8585
861
873
881
891
9045
911
921
9393
941

[1,1,3,1,5,3,7,1,9,5,1,3,1,7,15,1,17,9,1,5,21,1,1,
 3,1,1,27,7,1,15,31,1,33,17,7,9,1,1,3,5,1,21,1,1,
 45,1,1,3,7,1,51,1,1,27,1,7,3,1,1,15,1,31,63,1,65,
 33,1,17,3,7,1,9,73,1,15,1,1,3,1,5,3,1,1,21,85,1,3,
 1,1,45,1,1,93,1]