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A293247 as a simple table

na(n)
11
22
31
43
51
64
73
82
91
105
111
126
135
142
151
167
175
183
191
208
217
225
234
242
251
269
277
283
291
3010
319
328
337
344
353
362
371
3811
397
405
411
4212
4311
448
457
466
475
482
491
5013
5111
529
534
543
555
563
571
5814
5913
6011
614
622
631
6415
6513
6611
675
683
691
7016
7115
7214
7313
7412
7511
766
775
784
793
802
811

[1,2,1,3,1,4,3,2,1,5,1,6,5,2,1,7,5,3,1,8,7,5,4,2,
 1,9,7,3,1,10,9,8,7,4,3,2,1,11,7,5,1,12,11,8,7,6,5,
 2,1,13,11,9,4,3,5,3,1,14,13,11,4,2,1,15,13,11,5,3,
 1,16,15,14,13,12,11,6,5,4,3,2,1]