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A321512 as a simple table

na(n)
11
21
30
41
50
60
70
81
90
101
110
121
130
140
150
161
170
181
190
200
210
220
230
241
250
261
270
281
290
300
310
321
330
340
350
361
370
380
390
401
410
421
430
440
450
460
470
480
490
500
510
521
530
540
550
561
570
581
590
601
610
620
630
641
650
661
670
680
690
700
710
720
730
740
750
760
770
780
790
801
810
821
830
840
850
860
870
880
890
900
910
920
930
940
950
961
970
981
990
1001

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