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A284901 as a simple table

na(n)
10
21
31
40
50
60
71
80
90
100
110
121
130
141
150
161
171
180
190
200
210
221
230
241
250
261
270
281
291
300
310
320
330
341
351
360
370
380
390
401
411
420
430
440
451
460
470
480
490
501
510
521
530
541
550
561
571
580
590
600
610
621
631
640
650
660
670
681
691
700
710
720
730
741
751
760
770
780
791
800
810
820
830
841
850
861

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