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A120728 as a simple table

na(n)
12
21
32
40
51
61
71
81
90
100
110
121
130
140
151
162
172
181
190
202
212
222
231
241
251
262
272
280
292
301
312
320
332
341
351
362
372
382
391
400
411
422
430
442
451
460
470
480
492
501

[2,1,2,0,1,1,1,1,0,0,0,1,0,0,1,2,2,1,0,2,2,2,1,1,
 1,2,2,0,2,1,2,0,2,1,1,2,2,2,1,0,1,2,0,2,1,0,0,0,2,
 1]