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A128694 as a simple table

na(n)
12
21
35
42
51
62
72
81
915
102
114
121
131
142
152
162
174
181
192
205
211
222
231
2455
255
261
272
2813
292
302
311
322
332
341
352
361
374
382
395
401
412
421
432
445
451
4614
472
482
494
501
5116
521
532
542
551
562
575
582
592
60261
612
621
6315
641
652
661
672
684
6949
701
712
721
732
744
755
762
772
785
792
801
812
821
834
841
852
862
871
881
895
901
912
921
932
942
9513
961
972
984
991
10015
1012

[2,1,5,2,1,2,2,1,15,2,4,1,1,2,2,2,4,1,2,5,1,2,1,
 55,5,1,2,13,2,2,1,2,2,1,2,1,4,2,5,1,2,1,2,5,1,14,
 2,2,4,1,16,1,2,2,1,2,5,2,2,261,2,1,15,1,2,1,2,4,
 49,1,2,1,2,4,5,2,2,5,2,1,2,1,4,1,2,2,1,1,5,1,2,1,
 2,2,13,1,2,4,1,15,2]