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A068957 as a simple table

na(n)
21
31
41
52
62
71
84
96
103
111
123
132
144
153
162
171
182
193
204
212
222
233
243
254
269
274
282
292
305
314
326
333
346
354
364
372
386
397
406
414
423
434
448
456
462
477
484
497
5012
516
524
535
545
557
569
575
585
596
602
615
6210
634
646
655
665
673
689
694
704
712
723
734
749
754
766
774
785
797
809
8113
828
834
842
855
867

[1,1,1,2,2,1,4,6,3,1,3,2,4,3,2,1,2,3,4,2,2,3,3,4,
 9,4,2,2,5,4,6,3,6,4,4,2,6,7,6,4,3,4,8,6,2,7,4,7,
 12,6,4,5,5,7,9,5,5,6,2,5,10,4,6,5,5,3,9,4,4,2,3,4,
 9,4,6,4,5,7,9,13,8,4,2,5,7]