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A286939 as a simple table

na(n)
10
20
31
40
50
60
70
80
91
100
110
121
130
140
150
160
170
180
191
200
210
220
230
240
251
260
270
281
290
300
311
320
330
340
350
360
371
380
390
401
410
420
430
440
450
460
471
480
490
500
510
520
531
540
550
560
570
580
591
600
610
621
630
640
650
660
670
680
691
700
710
720
730
740
751
760
770
781
790
800
811
820
830
840
850
860

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