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A391437 as a simple table

na(n)
20
30
40
50
60
71
80
90
100
111
120
130
140
150
160
171
180
191
200
210
221
231
240
250
261
270
281
290
300
310
321
330
341
350
361
370
380
390
401
411
420
430
441
450
460
471
480
491
500
511
520
531
540
551
560
571
580
590
601
610
620
631
640
651
661
670
680
691
701
710
721
731
740
751
761
771
780
790
802
810
820
830
840
851
860
870
880
891
901
911
920
930
941
951
960
970
981
990
1000
1011
1020
1030
1042

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