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A280704 as a simple table

na(n)
11
21
31
41
51
61
71
87
91
109
111
1211
131
1413
151
165
171
1817
191
2019
211
2221
231
2423
251
2625
2713
289
291
3029
311
3231
3317
3433
351
367
371
3837
3919
4013
411
4241
431
4443
4523
4645
471
4847
491
501
5125
521
531
5453
551
565
5729
5857
591
6059
611
6261
6331
647
651
661
671
6867
6935
7069
711
7271
731
7473
7537
7625
771
7877
791
8079
8141
8281
831
8483
851
8685
8743
8829
891
9089
911
9291
9347
9493
951
9619
971
9897
9949
10033
1011

[1,1,1,1,1,1,1,7,1,9,1,11,1,13,1,5,1,17,1,19,1,21,
 1,23,1,25,13,9,1,29,1,31,17,33,1,7,1,37,19,13,1,
 41,1,43,23,45,1,47,1,1,25,1,1,53,1,5,29,57,1,59,1,
 61,31,7,1,1,1,67,35,69,1,71,1,73,37,25,1,77,1,79,
 41,81,1,83,1,85,43,29,1,89,1,91,47,93,1,19,1,97,
 49,33,1]