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A389606 as a simple table

na(n)
11
22
31
43
52
61
74
82
93
101
115
122
133
144
151
166
172
184
193
205
211
227
232
245
254
263
276
281
298
302
316
324
335
343
357
361
379
382
397
404
415
426
433
448
451
4610
472
488
494
506
515
527
533
549
551
5611
572
589
594
607
616
625
638
643
6510
661
6712
682
6910
704
718
726
737
745
759
763
7711
781
7913
802
8111
824
839
846

[1,2,1,3,2,1,4,2,3,1,5,2,3,4,1,6,2,4,3,5,1,7,2,5,
 4,3,6,1,8,2,6,4,5,3,7,1,9,2,7,4,5,6,3,8,1,10,2,8,
 4,6,5,7,3,9,1,11,2,9,4,7,6,5,8,3,10,1,12,2,10,4,8,
 6,7,5,9,3,11,1,13,2,11,4,9,6]