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A238897 as a simple table

na(n)
41
50
60
70
80
90
100
111
120
130
140
151
160
170
180
190
200
210
220
230
240
250
260
270
280
291
300
310
321
330
340
350
360
370
380
390
400
410
420
431
440
450
460
470
481
490
500
510
520
531
540
550
560
570
580
590
600
610
621
630
640
650
660
670
680
691
700
710
720
730
741
750
760
771
780
790
800
810
820
830
840
850
860
870
880
891
900
910
920
930
940
951
960
970
981
990
1000
1010
1020
1030
1040
1050
1060
1070
1080

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