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A089555 as a simple table

na(n)
12
23
31
44
51
62
75
86
92
101
117
127
132
143
158
161
178
189
193
202
219
221
2310
2410
254
262
2711
2811
291
3011
3112
323
334
3412
352
361
3712
3813
3913
4013
414
423
435
442
4514
4613
471
4814
494
505
5115
5214
532
541
5516
5616
575
5816
594
6015
616
623
6316
642
6517
6617
6717
6816
691
7017
716
724
7318
747
753
7618
772
7817
7919
8019
815
821
834
847
8519
8619
8718
8819

[2,3,1,4,1,2,5,6,2,1,7,7,2,3,8,1,8,9,3,2,9,1,10,
 10,4,2,11,11,1,11,12,3,4,12,2,1,12,13,13,13,4,3,5,
 2,14,13,1,14,4,5,15,14,2,1,16,16,5,16,4,15,6,3,16,
 2,17,17,17,16,1,17,6,4,18,7,3,18,2,17,19,19,5,1,4,
 7,19,19,18,19]