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A174821 as a simple table

na(n)
12
23
34
45
56
67
711
814
917
1018
1119
1223
1325
1427
1532
1636
1741
1843
1954
2060
2165
2269
2372
2477
2580
2682
2783
2887
2988
3092
3193
3298
33110
34117
35121
36122
37126
38127
39135
40136
41138
42149
43150
44155
45157
46159
47168
48170
49172
50173
51176
52179
53183
54188
55198

[2,3,4,5,6,7,11,14,17,18,19,23,25,27,32,36,41,43,
 54,60,65,69,72,77,80,82,83,87,88,92,93,98,110,117,
 121,122,126,127,135,136,138,149,150,155,157,159,
 168,170,172,173,176,179,183,188,198]