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A215520 as a simple table

na(n)
11
21
32
41
52
63
71
83
94
105
111
123
135
146
157
161
174
187
199
2010
2111
221
234
248
2510
2612
2713
2814
291
305
3110
3214
3317
3418
3519
3620
371
385
3912
4016
4121
4223
4325
4426
4527
461
476
4814
4920
5027
5129
5232
5334
5435
5536
561
576
5816
5922
6032
6135
6240
6343
6445
6546
6647
671
687
6919
7028
7140
7245
7352
7457
7560
7662
7763
7864

[1,1,2,1,2,3,1,3,4,5,1,3,5,6,7,1,4,7,9,10,11,1,4,
 8,10,12,13,14,1,5,10,14,17,18,19,20,1,5,12,16,21,
 23,25,26,27,1,6,14,20,27,29,32,34,35,36,1,6,16,22,
 32,35,40,43,45,46,47,1,7,19,28,40,45,52,57,60,62,
 63,64]