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A208644 as a simple table

na(n)
11
22
33
42
55
66
77
82
93
105
1111
126
1313
147
1515
162
1717
186
1919
205
217
2211
2323
246
255
2613
273
287
2929
3030
3131
322
3311
3417
3535
366
3737
3819
3913
405
4141
426
4343
4411
4515
4623
4747
486
497
505
5117
5213
5353
546
5511
567
5719
5829
5959
6030
6161
6231
637
642
6513
666
6767
6817
6923
7035
7171
726
7373

[1,2,3,2,5,6,7,2,3,5,11,6,13,7,15,2,17,6,19,5,7,
 11,23,6,5,13,3,7,29,30,31,2,11,17,35,6,37,19,13,5,
 41,6,43,11,15,23,47,6,7,5,17,13,53,6,11,7,19,29,
 59,30,61,31,7,2,13,6,67,17,23,35,71,6,73]