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A067731 as a simple table

na(n)
00
11
20
32
41
52
63
72
83
92
104
113
124
133
144
155
164
175
184
195
204
216
225
236
245
256
265
276
287
296
307
316
327
336
347
356
368
377
388
397
408
417
428
437
448
459
468
479
488
499
508
519
528
539
548
5510
569
5710
589
5910
609
6110
629
6310
649
6510
6611
6710
6811
6910
7011
7110
7211
7310
7411
7510
7611
7710
7812
7911
8012
8111
8212
8311
8412
8511
8612
8711

[0,1,0,2,1,2,3,2,3,2,4,3,4,3,4,5,4,5,4,5,4,6,5,6,
 5,6,5,6,7,6,7,6,7,6,7,6,8,7,8,7,8,7,8,7,8,9,8,9,8,
 9,8,9,8,9,8,10,9,10,9,10,9,10,9,10,9,10,11,10,11,
 10,11,10,11,10,11,10,11,10,12,11,12,11,12,11,12,
 11,12,11]