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A238509 as a simple table

na(n)
10
21
31
42
52
63
72
81
91
102
111
122
133
144
151
164
175
182
191
205
212
221
231
243
255
262
273
282
292
304
317
323
332
342
355
366
373
387
393
403
414
423
433
442
452
464
477
484
498
503
519
524
536
544
553
567
573
582
593
604
615
623
637
644
653
665
671
689
6910
706
718
722
733
743
756
766
773
781
792
807
811
826
835
842
856
868
873
884
891
901
911
929
9312
943
952
963
978
984
993
1002

[0,1,1,2,2,3,2,1,1,2,1,2,3,4,1,4,5,2,1,5,2,1,1,3,
 5,2,3,2,2,4,7,3,2,2,5,6,3,7,3,3,4,3,3,2,2,4,7,4,8,
 3,9,4,6,4,3,7,3,2,3,4,5,3,7,4,3,5,1,9,10,6,8,2,3,
 3,6,6,3,1,2,7,1,6,5,2,6,8,3,4,1,1,1,9,12,3,2,3,8,
 4,3,2]