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A243198 as a simple table

na(n)
15
291
3919
47795
5100000
61000000
710000000
8100000000
91000000000
109968647168
11100000000000
121000000000000
139999761914432
14100000000000000
151000000000000000
1610000000000000000
17100000000000000000
181000000000000000000
199999982446427242496

[5,91,919,7795,100000,1000000,10000000,100000000,
 1000000000,9968647168,100000000000,1000000000000,
 9999761914432,100000000000000,1000000000000000,
 10000000000000000,100000000000000000,
 1000000000000000000,9999982446427242496]