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A273404 as a simple table

na(n)
01
12
23
32
42
53
63
72
81
93
104
112
121
132
142
152
162
173
185
192
203
213
222
231
241
254
265
274
282
292
304
313
323
333
346
352
366
375
383
393
403
417
426
432
442
455
464
471
482
493
507
516
528
534
545
555
562
574
585
592
603
615
623
634
642
655
669
674
685
694
705
711
723
735
744
755
765
774
782
793
803

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