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A255238 as a simple table

na(n)
01
12
21
33
42
51
64
73
83
91
105
114
124
133
141
156
165
175
185
194
201
217
226
236
246
255
264
271
288
297
307
317
326
335
344
351
369
378
388
398
407
417
426
434
441
4510
469
479
489
499
508
517
526
535
541
5511
5610
5710
5810
5910
609
619
628
637
645
651

[1,2,1,3,2,1,4,3,3,1,5,4,4,3,1,6,5,5,5,4,1,7,6,6,
 6,5,4,1,8,7,7,7,6,5,4,1,9,8,8,8,7,7,6,4,1,10,9,9,
 9,9,8,7,6,5,1,11,10,10,10,10,9,9,8,7,5,1]