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A188020 as a simple table

na(n)
10
21
30
40
51
60
70
80
90
101
110
120
131
140
151
160
170
181
190
200
210
220
231
240
250
261
270
281
290
300
311
320
330
341
350
361
370
380
391
400
410
420
430
441
450
460
471
480
491
500
510
521
530
540
550
560
571
580
590
601
610
621
630
640
651
660
670
681
690
701
710
720
731
740
750
760
770
781
790
800
811
820
831
840
850
861
870
880
891
900
911
920
930
941
950
960
970
980
991
1000
1010
1021
1030
1041
1050
1060
1071
1080
1090
1100
1110
1121
1130
1140
1151
1160
1171

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