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A285931 as a simple table

na(n)
10
20
30
40
51
60
70
80
90
100
110
120
130
141
150
160
171
180
190
201
210
221
230
240
251
260
271
280
290
300
310
320
331
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
561
570
580
590
600
610
620
630
640
650
660
671
680
690
702
710
722
730
740
750
760
770
780
790
800
810
821
830
841
850
860
870
880
890
900
910
920
931
940
950
960
970
980
991
1000
1010
1020
1030
1040
1050

[0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,1,0,0,1,0,1,0,0,
 1,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0,2,0,2,0,0,
 0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,
 0,0,0,0,0,0]