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A056976 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
101
110
120
130
140
150
160
170
181
190
201
211
220
230
240
250
261
270
280
290
300
310
320
330
341
350
361
371
380
390
401
411
422
431
440
450
460
470
480
490
501
510
521
531
540
550
560
570
581
590
600
610
620
630
640
650
661
670
681
691
700
710
721
731
742
751
760
770
780
790
801
811
822
831
842
852
861
871
880
890
901
910
920
930
940
950
960
970
981
990
1001
1011
1020

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