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A291990 as a simple table

n a(n)
1 101
2 9091
3 909091
4 9901
5 909090909090909091
6 99990001
7 909090909090909090909090909091
8 999999000001
9 1111111111111111111
10 11111111111111111111111
11 9999999900000001
12 9090909090909090909090909090909090909090909090909091 

[101,9091,909091,9901,909090909090909091,99990001,
 909090909090909090909090909091,999999000001,
 1111111111111111111,11111111111111111111111,
 9999999900000001,
 90909090909090909090909090909090909090909090909090\
 91]

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Last modified April 23 13:11 EDT 2024. Contains 371913 sequences. (Running on oeis4.)