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A173833 as a simple table

n a(n)
1 7
2 97
3 997
4 9997
5 99997
6 999997
7 9999997
8 99999997
9 999999997
10 9999999997
11 99999999997
12 999999999997
13 9999999999997
14 99999999999997
15 999999999999997
16 9999999999999997
17 99999999999999997
18 999999999999999997 

[7,97,997,9997,99997,999997,9999997,99999997,
 999999997,9999999997,99999999997,999999999997,
 9999999999997,99999999999997,999999999999997,
 9999999999999997,99999999999999997,
 999999999999999997]

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Last modified April 19 02:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)