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A083909 as a simple table

n a(n)
1 9
2 990
3 99900
4 9999000
5 999990000
6 99999900000
7 9999999000000
8 999999990000000
9 99999999900000000
10 9999999999000000000
11 999999999990000000000
12 99999999999900000000000
13 9999999999999000000000000
14 999999999999990000000000000
15 99999999999999900000000000000 

[9,990,99900,9999000,999990000,99999900000,
 9999999000000,999999990000000,99999999900000000,
 9999999999000000000,999999999990000000000,
 99999999999900000000000,9999999999999000000000000,
 999999999999990000000000000,
 99999999999999900000000000000]

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Last modified August 16 16:43 EDT 2024. Contains 375177 sequences. (Running on oeis4.)