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A086799 as a simple table

na(n)
11
23
33
47
55
67
77
815
99
1011
1111
1215
1313
1415
1515
1631
1717
1819
1919
2023
2121
2223
2323
2431
2525
2627
2727
2831
2929
3031
3131
3263
3333
3435
3535
3639
3737
3839
3939
4047
4141
4243
4343
4447
4545
4647
4747
4863
4949
5051
5151
5255
5353
5455
5555
5663
5757
5859
5959
6063
6161
6263
6363
64127
6565
6667
6767
6871
6969
7071

[1,3,3,7,5,7,7,15,9,11,11,15,13,15,15,31,17,19,19,
 23,21,23,23,31,25,27,27,31,29,31,31,63,33,35,35,
 39,37,39,39,47,41,43,43,47,45,47,47,63,49,51,51,
 55,53,55,55,63,57,59,59,63,61,63,63,127,65,67,67,
 71,69,71]