A108908 - OEIS

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A108908 as a simple table

n	a(n)
1	9
2	99
3	998
4	9999
5	99999
6	999997
7	9999999
8	99999999
9	999999998
10	9999999999
11	99999999999
12	999999999997
13	9999999999999
14	99999999999999
15	999999999999998
16	9999999999999999
17	99999999999999999
18	999999999999999997

[9,99,998,9999,99999,999997,9999999,99999999, 999999998,9999999999,99999999999,999999999997, 9999999999999,99999999999999,999999999999998, 9999999999999999,99999999999999999, 999999999999999997]