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A066421 as a simple table

na(n)
11
22
31
45
51
61
74
83
94
101
111
121
133
142
152
165
171
185
192
201
214
221
232
241
255
261
271
284
291
301
314
323
339
344
359
362
372
381
394
403
411
421
439
448
451
461
479
488
495
504
511
525
534
543
551
563
574
583
591
604
612
621
632
644
658
663
672
681
691
703
711
722
733
742
758
762
771
784
794
803
814
821
838
847
851
862
873
881
893
902
911
924
933
943
953
964
975
984
991
1002

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