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A220663 as a simple table

na(n)
10
20
31
40
51
60
71
82
90
101
112
120
131
142
150
161
172
180
191
202
210
221
232
240
251
262
273
280
291
302
313
320
331
342
353
360
371
382
393
400
411
422
433
440
451
462
473
480
491
502
513
520
531
542
553
560
571
582
593
600
611
622
633
640
651
662
673
680
691
702
713
720
731
742
753
760
771
782
793
800
811
822
833
840
851
862
873

[0,0,1,0,1,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,
 1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,
 2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,
 3,0,1,2,3,0,1,2,3,0,1,2,3]