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A285801 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1516
1617
1718
1819
1920
2022
2123
2224
2325
2426
2527
2628
2729
2831
2932
3034
3136
3237
3338
3440
3541
3643
3744
3845
3946
4047
4148
4249
4350
4452
4553
4654
4756
4858
4959
5061
5162
5263
5364
5467
5568
5671
5772
5873
5974
6075
6176
6279
6380
6481
6582
6683
6786
6888
6989

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,16,17,18,19,20,
 22,23,24,25,26,27,28,29,31,32,34,36,37,38,40,41,
 43,44,45,46,47,48,49,50,52,53,54,56,58,59,61,62,
 63,64,67,68,71,72,73,74,75,76,79,80,81,82,83,86,
 88,89]