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A252488 as a simple table

na(n)
11
20
30
41
50
60
70
81
90
100
111
120
130
140
150
161
170
180
191
200
210
220
231
240
250
261
270
280
290
300
310
321
330
340
351
360
370
380
391
400
410
421
430
440
450
460
471
480
490
501
510
520
530
541
550
560
571
580
590
600
610
620
630
641
650
660
671
680
690
700
711
720
730
741
750
760
770
780
791
800
810
821
830
840
850
861
870
880
891
900
910
920
930
940
951

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