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A227998 as a simple table

na(n)
11
20
31
41
50
60
71
80
90
101
110
120
131
140
150
161
171
180
190
200
210
221
230
240
251
260
270
280
291
300
311
320
330
341
350
360
371
380
390
400
411
420
431
440
450
461
470
480
491
501
510
520
531
540
550
561
571
580
591
600
610
621
630
640
651
660
670
680
690
701
710
720
730
741
750
760
771
780
790
801
810
820
830
841
850
860
871
880

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