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A099148 as a simple table

na(n)
12
23
38
49
514
615
720
839
977
1098
1199
12138
13158
14164
15177
16200
17399
18492
19614
20998
21999
221065
231383
241505
251598
261797
271859
281920
292000
302655
313077
323213
333762
343999
356707

[2,3,8,9,14,15,20,39,77,98,99,138,158,164,177,200,
 399,492,614,998,999,1065,1383,1505,1598,1797,1859,
 1920,2000,2655,3077,3213,3762,3999,6707]