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A068508 as a simple table

na(n)
11
21
31
42
53
65
74
83
91
101
111
122
133
145
154
163
171
181
191
202
213
225
234
243
251
261
271
282
293
305
314
323
331
341
351
362
373
385
394
403
411
421
431
442
453
465
474
483
491
501
511
522
533
545
554
563
571
581
591
602
613
625
634
643
651
661
671
682
693
705
714
723
731
741
751
762
773
785
794
803
811
821
831
842
853
865
874
883
891
901
911
922
933
945
954
963
971
981
991
1002
1013
1025
1034
1043
1051

[1,1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,
 1,1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,
 1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,1,
 1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,1,1,2,3,5,4,3,1,1,1,
 2,3,5,4,3,1]