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A248640 as a simple table

na(n)
00
10
20
30
41
50
60
70
80
91
100
110
120
130
141
150
160
170
180
191
201
211
221
232
242
250
260
270
280
291
300
310
320
330
341
350
360
370
380
391
400
410
420
430
441
451
461
471
482
492
500
510
520
530
541
550
560
570
580
591
600
610
620
630
641
650
660
670
680
691
701
711
721
732
742
750
760
770
780
791
800
810
820
830
841
850
860
870
880
891
900
910

[0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,1,1,1,2,
 2,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,1,1,1,2,
 2,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,1,1,1,2,
 2,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0]