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A249866 as a simple table

na(n)
21
30
41
51
60
71
80
91
100
111
121
130
140
150
161
170
181
190
201
210
221
231
240
251
260
271
280
291
300
311
320
331
340
350
360
371
381
390
401
410
420
430
441
450
461
470
481
490
501
510
521
530
541
550
561
571
580
590
600
611
620
631
640
650
660
671
680
691
700
711
720
731
740
751
760
771
780
791
801
810
821
830
841
850
860
870
881
890
901
910
921
930
941
950
961
970
980

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