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A287451 as a simple table

na(n)
10
21
32
42
50
61
71
82
90
101
112
120
130
141
152
162
170
181
192
200
211
221
232
240
250
261
272
282
290
301
311
322
330
340
351
362
370
381
392
402
410
421
431
442
450
461
472
480
490
501
512
522
530
541
551
562
570
580
591
602
612
620
631
642
650
661
671
682
690
700
711
722
730
741
752
762
770
781
791
802
810
821
832
840
850
861

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