n | a(n) |
---|---|
1 | 0 |
2 | 11 |
3 | 191 |
4 | 1999 |
5 | 11119 |
6 | 111119 |
7 | 1111991 |
8 | 11111119 |
9 | 111111199 |
10 | 1111111919 |
11 | 11111111911 |
12 | 111111199919 |
13 | 1111111119919 |
14 | 11111111119111 |
15 | 111111111119119 |
16 | 1111111111111999 |
17 | 11111111111111119 |
18 | 111111111111191111 |
[0,11,191,1999,11119,111119,1111991,11111119, 111111199,1111111919,11111111911,111111199919, 1111111119919,11111111119111,111111111119119, 1111111111111999,11111111111111119, 111111111111191111] |