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A187969 as a simple table

na(n)
10
21
30
40
50
60
71
80
90
100
110
121
130
141
150
160
170
180
191
200
210
220
230
241
250
261
270
280
290
300
311
320
330
340
350
361
370
380
390
400
411
420
431
440
450
460
470
481
490
500
510
520
531
540
551
560
570
580
590
601
610
620
630
640
651
660
670
680
690
701
710
721
730
740
750
760
771
780
790
800
810
821
830
841
850
860
870
880
891
900
910
920
930
941
950
961
970
980
990
1000
1011
1020
1030
1040
1050
1061
1070
1080
1090
1100
1111
1120
1131
1140
1150
1160
1170
1181
1190
1200
1210
1220
1231
1240

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