n | a(n) |
---|---|
1 | 19 |
2 | 109 |
3 | 199 |
4 | 1009 |
5 | 1999 |
6 | 10009 |
7 | 10099 |
8 | 100999 |
9 | 199999 |
10 | 1000099 |
11 | 1000999 |
12 | 19999999 |
13 | 1000000009 |
14 | 1000009999 |
15 | 1000099999 |
16 | 1009999999 |
17 | 10000000999 |
18 | 10000099999 |
19 | 10999999999 |
20 | 100999999999 |
21 | 1000000009999 |
22 | 1000000999999 |
23 | 1099999999999 |
24 | 10000000000099 |
25 | 10009999999999 |
26 | 100000000000099 |
27 | 100000009999999 |
[19,109,199,1009,1999,10009,10099,100999,199999, 1000099,1000999,19999999,1000000009,1000009999, 1000099999,1009999999,10000000999,10000099999, 10999999999,100999999999,1000000009999, 1000000999999,1099999999999,10000000000099, 10009999999999,100000000000099,100000009999999] |