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A160980 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
101
111
121
131
141
151
161
171
181
191
202
211
222
231
242
251
262
271
282
291
304
312
324
334
345
354
367
375
387
397
4010
418
4211
4310
4413
4512
4614
4713
4817
4915
5020
5118
5222
5320
5424
5524
5627
5725
5829
5928
6037
6132
6238
6337
6444
6543
6651
6748
6857
6954
7070
7164
7278
7373
7487
7586
76101
7798
78114
79110
80136
81127
82150
83146
84171
85168
86192

[0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,2,1,2,1,2,
 1,2,1,2,1,4,2,4,4,5,4,7,5,7,7,10,8,11,10,13,12,14,
 13,17,15,20,18,22,20,24,24,27,25,29,28,37,32,38,
 37,44,43,51,48,57,54,70,64,78,73,87,86,101,98,114,
 110,136,127,150,146,171,168,192]