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A023121 as a simple table

na(n)
11
21
32
41
52
63
71
82
93
104
111
122
133
144
155
161
172
183
194
205
211
226
232
243
254
265
271
286
292
307
313
324
335
341
356
362
377
383
398
404
415
421
436
442
457
463
478
484
499
505
511
526
532
547
553
568
574
589
595
601
6110
626
632
647
653
668
674
689
695
701
7110
726
732
7411
757
763
778
784
799
805
811
8210
836
842
8511
867
873
8812
898
904
919
925
931
9410
956
962

[1,1,2,1,2,3,1,2,3,4,1,2,3,4,5,1,2,3,4,5,1,6,2,3,
 4,5,1,6,2,7,3,4,5,1,6,2,7,3,8,4,5,1,6,2,7,3,8,4,9,
 5,1,6,2,7,3,8,4,9,5,1,10,6,2,7,3,8,4,9,5,1,10,6,2,
 11,7,3,8,4,9,5,1,10,6,2,11,7,3,12,8,4,9,5,1,10,6,
 2]