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A144246 as a simple table

n a(n)
1 19
2 109
3 991
4 1009
5 10009
6 99991
7 9999991
8 1000000009
9 1000000000000000009
10 10000000000000000000009
11 999999999999999999999999999999991
12 999999999999999999999999999999999999999999991 

[19,109,991,1009,10009,99991,9999991,1000000009,
 1000000000000000009,10000000000000000000009,
 999999999999999999999999999999991,
 999999999999999999999999999999999999999999991]

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)