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A181810 as a simple table

na(n)
11
22
32
41
53
62
71
82
91
102
111
122
133
144
151
161
172
183
194
201
212
223
232
241
251
261
272
282
291
302
313
322
331
344
351
362
374
381
391
402
413
422
431
444
451
462
474
481
492
502
513
521
531
546
551
562
571
582
592
601
612
622
633
641
651
666
673
682
691
704
711
722
731
742
752
763
771
786
793
802
814
821
831
841
851
862
872

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