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A180980 as a simple table

na(n)
11
21
31
41
52
61
71
82
92
101
111
123
133
143
151
161
173
185
195
203
211
221
234
246
258
266
274
281
291
304
318
3212
3312
348
354
361
371
385
3910
4018
4120
4218
4310
445
451
461
475
4813
4924
5032
5132
5224
5313
545
551
561
576
5815
5933
6049
6158
6249
6333
6415
656
661
671
686
6918
7043
7173
7294
7394
7473
7543
7618
776
781
791
807
8121
8255
83102
84151
85169
86151
87102
8855
8921
907
911

[1,1,1,1,2,1,1,2,2,1,1,3,3,3,1,1,3,5,5,3,1,1,4,6,
 8,6,4,1,1,4,8,12,12,8,4,1,1,5,10,18,20,18,10,5,1,
 1,5,13,24,32,32,24,13,5,1,1,6,15,33,49,58,49,33,
 15,6,1,1,6,18,43,73,94,94,73,43,18,6,1,1,7,21,55,
 102,151,169,151,102,55,21,7,1]