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A173813 as a simple table

na(n)
110
2190
31990
419990
5199990
61999990
719999990
8199999990
91999999990
1019999999990
11199999999990
121999999999990
1319999999999990
14199999999999990
151999999999999990
1619999999999999990
17199999999999999990

[10,190,1990,19990,199990,1999990,19999990,
 199999990,1999999990,19999999990,199999999990,
 1999999999990,19999999999990,199999999999990,
 1999999999999990,19999999999999990,
 199999999999999990]

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