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A287401 as a simple table

na(n)
10
21
32
42
51
60
71
82
90
101
112
120
132
141
150
160
171
182
192
201
210
221
232
240
250
261
272
282
291
300
311
322
330
340
351
362
371
382
390
402
411
420
430
441
452
460
471
482
492
501
510
521
532
540
551
562
570
582
591
600
610
621
632
642
651
660
671
682
690
700
711
722
730
741
752
762
771
780
791
802
810
821
832
840
852
861

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