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A162520 as a simple table

na(n)
11
21
31
42
51
63
71
84
91
105
111
126
131
147
151
168
171
189
192
201
212
222
232
243
252
264
272
285
292
306
312
327
332
348
352
369
373
381
393
402
413
423
433
444
453
465
473
486
493
507
513
528
533
549
554
561
574
582
594
603
614
624
634
645
654
666
674
687
694
708
714
729
735
741
755
762
775
783
795
804
815
825
835
846
855
867
875
888
895
909
916
921
936
942
956
963
976
984
996
1005
1016
1026

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