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A152980 as a simple table

na(n)
01
12
23
33
44
57
68
75
84
97
109
1110
1215
1322
1420
159
164
177
189
1910
2015
2122
2221
2314
2415
2523
2628
2735
2852
2964
3048
3117
324
337
349
3510
3615
3722
3821
3914
4015
4123
4228
4335
4452
4564
4649
4722
4815
4923
5028
5135
5252
5365
5456
5543
5653
5774
5891
59122
60168
61176
62112
6333
644
657
669
6710
6815
6922
7021
7114
7215
7323
7428
7535
7652

[1,2,3,3,4,7,8,5,4,7,9,10,15,22,20,9,4,7,9,10,15,
 22,21,14,15,23,28,35,52,64,48,17,4,7,9,10,15,22,
 21,14,15,23,28,35,52,64,49,22,15,23,28,35,52,65,
 56,43,53,74,91,122,168,176,112,33,4,7,9,10,15,22,
 21,14,15,23,28,35,52]