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A048991 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1213
1314
1415
1516
1617
1718
1819
1920
2021
2122
2224
2325
2426
2527
2628
2729
2830
2932
3033
3135
3236
3337
3438
3539
3640
3743
3844
3946
4047
4148
4249
4350
4454
4555
4657
4758
4859
4960
5065
5166
5268
5369
5470
5576
5677
5779
5880
5987
6088
6190
6299
63100
64102
65103
66104
67105
68106
69107
70108
71109
72110
73112

[1,2,3,4,5,6,7,8,9,10,11,13,14,15,16,17,18,19,20,
 21,22,24,25,26,27,28,29,30,32,33,35,36,37,38,39,
 40,43,44,46,47,48,49,50,54,55,57,58,59,60,65,66,
 68,69,70,76,77,79,80,87,88,90,99,100,102,103,104,
 105,106,107,108,109,110,112]