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A072400 as a simple table

na(n)
11
22
33
41
55
66
77
82
91
102
113
123
135
146
157
161
171
182
193
205
215
226
237
246
251
262
273
287
295
306
317
322
331
342
353
361
375
386
397
402
411
422
433
443
455
466
477
483
491
502
513
525
535
546
557
566
571
582
593
607
615
626
637
641
651
662
673
681
695
706
717
722
731
742
753
763
775
786
797
805
811
822
833
845
855
866
877
886
891
902
913
927
935
946
957
966

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