n | a(n) |
---|---|
1 | 1 |
2 | 9 |
3 | 55 |
4 | 99 |
5 | 999 |
6 | 7777 |
7 | 9999 |
8 | 22222 |
9 | 99999 |
10 | 999999 |
11 | 4444444 |
12 | 9999999 |
13 | 88888888 |
14 | 99999999 |
15 | 999999999 |
16 | 1111111111 |
[1,9,55,99,999,7777,9999,22222,99999,999999, 4444444,9999999,88888888,99999999,999999999, 1111111111] |