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A261990 as a simple table

na(n)
00
10
20
30
41
50
60
70
80
91
100
110
120
130
141
151
161
171
180
191
200
210
220
230
241
250
260
270
280
291
301
311
321
330
341
350
360
370
380
391
400
410
420
430
441
451
461
471
480
491
501
510
520
531
540
550
560
570
581
591
601
611
620
631
640
650
660
670
681
690
700
710
720
731
741
751
761
770
781
790
800
810
820
831
840
850
860
870
881
891
901
911
920
931
941
950
960
970
980
991
1001
1010
1021
1030
1040
1050
1060

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