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A143973 as a simple table

na(n)
12
24
31
44
51
62
75
81
91
103
114
121
131
141
151
163
171
182
194
203
212
222
231
244
251
261
272
282
293
302
311
321
332
341
351
361
372
383
392
404
411
422
432
442
451
461
474
481
491
503
511
522
531
542
553
562
573
582
592
601
612
621
633
641
651
664
671
683
691
702
711
721
733
741
751
761
771
781
791
801
813
821
831
845
851
862
871

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