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A048206 as a simple table

na(n)
11
22
32
43
54
63
73
85
94
106
114
124
135
147
158
169
175
186
195
205
2110
2211
236
247
2512
2613
276
2814
296
306
319
327
3315
3416
3517
3618
377
3819
398
4020
417
4221
437
447
459
4622
478
4823
4924
5025
5113
528
5326
5414
559
568
5727
588
598
6028
6115
6229
639
6430
6531
6610
6716
689
6917
7032
7118
729
7313
749
759

[1,2,2,3,4,3,3,5,4,6,4,4,5,7,8,9,5,6,5,5,10,11,6,
 7,12,13,6,14,6,6,9,7,15,16,17,18,7,19,8,20,7,21,7,
 7,9,22,8,23,24,25,13,8,26,14,9,8,27,8,8,28,15,29,
 9,30,31,10,16,9,17,32,18,9,13,9,9]