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A268310 as a simple table

na(n)
10
20
30
41
50
60
70
81
90
100
110
121
130
140
151
160
171
181
190
200
211
220
231
240
250
261
270
280
290
301
310
320
331
340
351
361
370
381
390
401
410
420
430
441
450
461
471
480
491
501
510
520
531
541
551
560
570
581
590
600
611
620
631
640
650
661
670
681
690
701
710
720
731
740
750
760
771
780
790
800
811
821
830
841
850
861
870

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