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A056975 as a simple table

na(n)
10
20
30
40
50
60
70
80
91
100
110
120
130
140
150
160
171
181
191
200
210
220
230
240
251
260
270
280
290
300
310
320
331
341
351
361
371
381
391
400
411
420
430
440
450
460
470
480
491
501
511
520
530
540
550
560
571
580
590
600
610
620
630
640
651
661
671
681
691
701
711
721
732
741
751
761
771
781
791
800
811
821
831
840
850
860
870
880
891
900
910
920
930
940
950
960
971
981
991
1001
1011
1021

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