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A363131 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
110
121
130
140
150
160
170
181
190
201
210
220
230
241
250
260
270
281
290
300
310
320
330
340
350
360
370
380
390
401
410
420
430
441
451
460
470
481
490
501
510
521
530
541
550
561
570
580
590
601
610
620
631
640
650
660
670
681
690
700
710
721
730
740
751
761
770
780
790
801
810
820
830
841
850
860
870

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