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A120872 as a simple table

na(n)
12
21
37
44
514
69
716
87
925
1014
1123
128
1334
1417
1547
1628
1741
1818
1956
2031
2146
2217
2363
2432
2582
2649
2768
2831
2989
3050
3171
3228
3394
3449
3572
3623
3797
3846
39124
4071
4198
4241
43127
4468
4597
4634
47128
4863
49161
5094
51127
5256
53162
5489
55124
5647
57161
5882
59119
6036
61158
6273
63199
64112

[2,1,7,4,14,9,16,7,25,14,23,8,34,17,47,28,41,18,
 56,31,46,17,63,32,82,49,68,31,89,50,71,28,94,49,
 72,23,97,46,124,71,98,41,127,68,97,34,128,63,161,
 94,127,56,162,89,124,47,161,82,119,36,158,73,199,
 112]