n | a(n) |
---|---|
1 | 10 |
2 | 99 |
3 | 991 |
4 | 9909 |
5 | 99091 |
6 | 990909 |
7 | 9909091 |
8 | 99090909 |
9 | 990909091 |
10 | 9909090909 |
11 | 99090909091 |
12 | 990909090909 |
13 | 9909090909091 |
14 | 99090909090909 |
15 | 990909090909091 |
16 | 9909090909090909 |
17 | 99090909090909091 |
18 | 990909090909090909 |
19 | 9909090909090909091 |
20 | 99090909090909090909 |
[10,99,991,9909,99091,990909,9909091,99090909, 990909091,9909090909,99090909091,990909090909, 9909090909091,99090909090909,990909090909091, 9909090909090909,99090909090909091, 990909090909090909,9909090909090909091, 99090909090909090909] |