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A161491 as a simple table

na(n)
10
20
31
41
50
62
71
82
90
100
111
121
130
141
150
160
170
181
190
200
214
220
230
240
253
261
271
280
294
300
311
320
330
341
350
364
370
386
390
400
410
423
430
445
451
461
470
480
490
501
510
520
532
541
551
560
570
582
590
600
611
620
630
640
651
660
670
681
690
701
711
720
730
740
752
760
770
781
791
801
810
821
830
846
850
860
871
881
890
901
910
920
936
942
950
960
970
980
991
1002
1010
1020
1030
1040
1051

[0,0,1,1,0,2,1,2,0,0,1,1,0,1,0,0,0,1,0,0,4,0,0,0,
 3,1,1,0,4,0,1,0,0,1,0,4,0,6,0,0,0,3,0,5,1,1,0,0,0,
 1,0,0,2,1,1,0,0,2,0,0,1,0,0,0,1,0,0,1,0,1,1,0,0,0,
 2,0,0,1,1,1,0,1,0,6,0,0,1,1,0,1,0,0,6,2,0,0,0,0,1,
 2,0,0,0,0,1]