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A229998 as a simple table

na(n)
11
22
33
44
55
63
77
88
99
101
1111
126
1313
147
153
1616
1717
189
1919
2010
2121
2211
2323
2412
2525
2613
2727
2814
2929
303
3131
3232
3333
3417
357
3618
3737
3819
3939
404
4141
4221
4343
4422
4545
4623
4747
4824
4949
505
5151
5226
5353
5427
5555
5628
5757
5829
5959
603
6161
6231
6363
6464
651
6633
6767
682
6969
707

[1,2,3,4,5,3,7,8,9,1,11,6,13,7,3,16,17,9,19,10,21,
 11,23,12,25,13,27,14,29,3,31,32,33,17,7,18,37,19,
 39,4,41,21,43,22,45,23,47,24,49,5,51,26,53,27,55,
 28,57,29,59,3,61,31,63,64,1,33,67,2,69,7]