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A030738 as a simple table

na(n)
12
21
32
41
52
61
72
83
94
101
112
123
134
145
151
162
173
184
195
206
217
221
232
243
254
265
276
287
298
309
311
322
333
344
355
366
377
388
399
4010
4112
421
432
443
454
465
476
487
498
509
5110
5212
5313
5415
551
562
573
584
595
606
617
628
639
6410
6512
6613
6715
6816
6918
701
712
723
734
745
756
767
778
789
7910
8011
8112
8213

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