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A251767 as a simple table

na(n)
14
23
34
43
54
63
74
83
94
103
114
121
132
144
153
164
173
184
193
204
213
224
233
244
253
264
271
284
293
304
313
324
333
344
353
364
373
384
393
404
411
424
433
444
453
464
472
484
493
504
513
524
533
544
551
562
574
583
594
603
614
623
634
643
654
663
674
683
694
701
714
723
734
743
754
763
774
783
794
803
814
822
834
841
854
863

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