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A321921 as a simple table

na(n)
11
20
31
41
51
60
70
81
90
101
111
121
132
141
150
160
170
180
191
200
211
220
231
241
250
260
270
281
291
300
311
321
332
341
351
362
373
383
391
400
410
420
430
440
450
461
470
480
490
500
510
521
531
540
550
560
571
580
591
601
610
620
631
642
651
662
671
680
690
700
711
721
732
741
750
761
772
783
793
803
811
821
834
845
855
866
874

[1,0,1,1,1,0,0,1,0,1,1,1,2,1,0,0,0,0,1,0,1,0,1,1,
 0,0,0,1,1,0,1,1,2,1,1,2,3,3,1,0,0,0,0,0,0,1,0,0,0,
 0,0,1,1,0,0,0,1,0,1,1,0,0,1,2,1,2,1,0,0,0,1,1,2,1,
 0,1,2,3,3,3,1,1,4,5,5,6,4]