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A026405 as a simple table

na(n)
11
21
31
42
52
62
73
83
93
104
114
125
135
145
156
166
176
187
197
208
218
228
239
249
259
2610
2710
2810
2910
3011
3112
3212
3312
3413
3513
3613
3713
3814
3914
4014
4116
4216
4317
4417
4517
4618
4718
4818
4918
5019
5119
5219
5319
5421
5521
5621
5721
5821
5922
6022
6122
6223
6324
6424
6524
6624
6724
6824
6925
7025
7125
7226
7328
7428
7529

[1,1,1,2,2,2,3,3,3,4,4,5,5,5,6,6,6,7,7,8,8,8,9,9,
 9,10,10,10,10,11,12,12,12,13,13,13,13,14,14,14,16,
 16,17,17,17,18,18,18,18,19,19,19,19,21,21,21,21,
 21,22,22,22,23,24,24,24,24,24,24,25,25,25,26,28,
 28,29]