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A020472 as a simple table

na(n)
189
28999
389899
489989
598899
698999
799989
8888989
9898889
10989999
11998989
128888989
138889889
148988989
158989999
168998889
178999899
189888889
199889889
209899999
219989899
229999889
2388888999
2488898989
2588989899
2689888989
2789889889
2889898889
2989999999
3098888989

[89,8999,89899,89989,98899,98999,99989,888989,
 898889,989999,998989,8888989,8889889,8988989,
 8989999,8998889,8999899,9888889,9889889,9899999,
 9989899,9999889,88888999,88898989,88989899,
 89888989,89889889,89898889,89999999,98888989]