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A089657 as a simple table

na(n)
11
22
33
44
55
66
77
89
910
1010
1111
1213
1313
1415
1516
1617
1717
1820
1919
2020
2121
2222
2323
2425
2526
2627
2727
2828
2929
3030
3134
3235
3336
3436
3538
3639
3741
3842
3943
4044
4146
4246
4343
4449
4550
4651
4747
4849
4950
5050
5151
5252
5353
5455
5556
5657
5758
5858
5960
6061
6162
6263
6366
6466
6567
6667
6771
6872
6973
7074
7175
7276

[1,2,3,4,5,6,7,9,10,10,11,13,13,15,16,17,17,20,19,
 20,21,22,23,25,26,27,27,28,29,30,34,35,36,36,38,
 39,41,42,43,44,46,46,43,49,50,51,47,49,50,50,51,
 52,53,55,56,57,58,58,60,61,62,63,66,66,67,67,71,
 72,73,74,75,76]