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A179843 as a simple table

na(n)
13
23
34
44
54
65
75
86
96
107
117
127
137
147
159
1610
1710
1810
1911
2012
2112
229
239
2412
2512
2611
2711
2811
2910
3011
3114
3214
3314
3415
3516
3616
3714
3813
3917
4017
4116
4216
4318
4418
4519
4619
4716
4816
4916
5016
5117
5217
5317
5418
5519
5621
5721
5821
5920
6020
6121
6221
6320
6419
6519
6619
6718
6819
6919
7019
7128
7229
7329
7430

[3,3,4,4,4,5,5,6,6,7,7,7,7,7,9,10,10,10,11,12,12,
 9,9,12,12,11,11,11,10,11,14,14,14,15,16,16,14,13,
 17,17,16,16,18,18,19,19,16,16,16,16,17,17,17,18,
 19,21,21,21,20,20,21,21,20,19,19,19,18,19,19,19,
 28,29,29,30]