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A121884 as a simple table

na(n)
11
21
32
43
51
62
72
83
92
103
112
123
134
141
152
163
172
184
192
204
215
221
234
242
251
264
273
282
293
304
312
324
335
346
353
362
372
385
396
408
419
4210
432
442
453
462
473
484
496
507
514
521
532
544
553
562
574
585
592
604
616
621
632
643
654
666
677
6810
692
703
714
726
737
748
7510
763
772
784
796
808
812
823
832
845
852
864
873
881
894
906
918
922
935
946
958
969
9710
9812
992
1001
1012
1024
1036

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