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A180075 as a simple table

na(n)
11
21
32
41
53
62
71
82
91
102
113
121
131
144
153
162
171
184
192
204
211
222
231
243
252
261
272
283
294
301
311
324
332
341
354
363
374
381
395
403
412
421
434
441
452
463
475
486
491
504
513
521
536
541
552
564
576
581
594
602
611
626
635
645
653
661

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