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A231155 as a simple table

n a(n)
2 9
3 88
4 999
5 9999
6 77777
7 999999
8 9999999
9 88888888
10 999999999
11 9999999999
12 77777777777
13 999999999999
14 9999999999999
15 88888888888888
16 999999999999999
17 9999999999999999
18 77777777777777777
19 999999999999999999
20 9999999999999999999

[9,88,999,9999,77777,999999,9999999,88888888,
 999999999,9999999999,77777777777,999999999999,
 9999999999999,88888888888888,999999999999999,
 9999999999999999,77777777777777777,
 999999999999999999,9999999999999999999]

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Last modified April 25 13:24 EDT 2024. Contains 371971 sequences. (Running on oeis4.)