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A049847 as a simple table

na(n)
21
31
41
52
61
71
82
91
101
112
121
132
143
151
161
172
183
191
202
211
221
232
241
252
263
271
282
293
301
311
322
333
341
352
361
371
382
393
401
412
421
432
443
451
462
473
484
491
502
511
521
532
541
551
562
571
582
593
604
615
626
637
641
652
661
672
683
691
701
712
723
734
745
751
761
772
783
791
802
813
821
832
841
852
863
871
882
893
901
911
922
933
944

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