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A064577 as a simple table

na(n)
10
20
31
40
51
60
72
81
91
100
113
120
131
141
154
160
173
180
194
201
211
220
236
241
251
262
274
280
294
300
316
321
331
341
359
360
371
381
397
400
415
420
435
443
451
460
4711
481
493
501
516
520
536
541
558
561
571
580
5912
600
611
623
6311
641
655
660
678
681
694
700
7117
720
731
743
758
761
776
780
7915
804
811
820
8317
841
851
861
8713
880
8911
901
9110
921
931
941
9521
960
973
984
9916

[0,0,1,0,1,0,2,1,1,0,3,0,1,1,4,0,3,0,4,1,1,0,6,1,
 1,2,4,0,4,0,6,1,1,1,9,0,1,1,7,0,5,0,5,3,1,0,11,1,
 3,1,6,0,6,1,8,1,1,0,12,0,1,3,11,1,5,0,8,1,4,0,17,
 0,1,3,8,1,6,0,15,4,1,0,17,1,1,1,13,0,11,1,10,1,1,
 1,21,0,3,4,16]