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A156643 as a simple table

na(n)
00
10
21
30
41
51
61
71
82
90
102
112
121
132
143
150
163
172
182
193
202
211
223
232
241
254
263
272
285
293
302
315
324
332
343
354
362
375
384
391
405
413
423
434
444
451
466
474
483

[0,0,1,0,1,1,1,1,2,0,2,2,1,2,3,0,3,2,2,3,2,1,3,2,
 1,4,3,2,5,3,2,5,4,2,3,4,2,5,4,1,5,3,3,4,4,1,6,4,3]