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A066853 as a simple table

na(n)
11
22
33
44
55
66
77
86
99
1010
117
1211
139
1414
1515
1611
1713
1811
1912
2020
219
2214
2319
2413
2525
2618
2727
2821
2910
3030
3119
3221
3319
3413
3535
3615
3729
3813
3925
4030
4119
4218
4333
4420
4545
4621
4715
4815
4937
5050
5135
5230
5337
5429
5512
5625
5733
5820
5937
6055
6125
6221
6323
6442
6545
6638
6751
6820
6929
7070
7144
7215
7357

[1,2,3,4,5,6,7,6,9,10,7,11,9,14,15,11,13,11,12,20,
 9,14,19,13,25,18,27,21,10,30,19,21,19,13,35,15,29,
 13,25,30,19,18,33,20,45,21,15,15,37,50,35,30,37,
 29,12,25,33,20,37,55,25,21,23,42,45,38,51,20,29,
 70,44,15,57]