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A199920 as a simple table

na(n)
10
20
30
40
50
61
71
82
91
102
110
123
131
143
152
162
172
183
192
202
211
222
233
243
253
261
271
283
292
304
311
322
332
343
353
363
372
384
392
404
413
423
435
443
453
463
473
484
495
503
513
523
533
545
554
564
573
584
593
603
612
623
636
645
654
662
671
683
695
705
715
722
732
743
755
763
775
784
795
802
813
822
835
845
856
864
872
883
893
904
913
923
935
944
953
961
971
984
995
1007

[0,0,0,0,0,1,1,2,1,2,0,3,1,3,2,2,2,3,2,2,1,2,3,3,
 3,1,1,3,2,4,1,2,2,3,3,3,2,4,2,4,3,3,5,3,3,3,3,4,5,
 3,3,3,3,5,4,4,3,4,3,3,2,3,6,5,4,2,1,3,5,5,5,2,2,3,
 5,3,5,4,5,2,3,2,5,5,6,4,2,3,3,4,3,3,5,4,3,1,1,4,5,
 7]