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A098668 as a simple table

na(n)
11
22
33
42
55
61
77
88
99
101
1111
121
1313
142
155
168
1717
189
1919
201
217
222
2323
244
2525
261
2727
282
2929
301
3131
3232
3311
341
357
363
3737
381
3913
4020
4141
423
4343
442
453
461
4747
4816
4949
5025
5151
521
5353
549
5511
568
5719
581
5959
601
6161
622
639
6432
6565
661
6767
681
6923
707
7171
7236
7373
741
7525
762
7711
781
7979
8016
8181
821
8383
847
8517

[1,2,3,2,5,1,7,8,9,1,11,1,13,2,5,8,17,9,19,1,7,2,
 23,4,25,1,27,2,29,1,31,32,11,1,7,3,37,1,13,20,41,
 3,43,2,3,1,47,16,49,25,51,1,53,9,11,8,19,1,59,1,
 61,2,9,32,65,1,67,1,23,7,71,36,73,1,25,2,11,1,79,
 16,81,1,83,7,17]