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A081246 as a simple table

na(n)
13
24
32
41
55
66
73
84
92
101
119
1210
135
146
153
164
172
181
1917
2018
219
2210
235
246
253
264
272
281
2933
3034
3117
3218
339
3410
355
366
373
384
392
401
4165
4266
4333
4434
4517
4618
479
4810
495
506
513
524
532
541
55129
56130
5765
5866
5933
6034
6117
6218
639
6410
655
666
673
684
692
701
71257
72258
73129
74130
7565
7666
7733
7834
7917
8018
819
8210
835
846
853
864
872
881
89513
90514
91257
92258
93129
94130
9565
9666
9733
9834
9917
10018
1019
10210
1035
1046
1053
1064
1072
1081

[3,4,2,1,5,6,3,4,2,1,9,10,5,6,3,4,2,1,17,18,9,10,
 5,6,3,4,2,1,33,34,17,18,9,10,5,6,3,4,2,1,65,66,33,
 34,17,18,9,10,5,6,3,4,2,1,129,130,65,66,33,34,17,
 18,9,10,5,6,3,4,2,1,257,258,129,130,65,66,33,34,
 17,18,9,10,5,6,3,4,2,1,513,514,257,258,129,130,65,
 66,33,34,17,18,9,10,5,6,3,4,2,1]