n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 109 |
3 | 990 |
4 | 1099 |
5 | 99900 |
6 | 100999 |
7 | 1008891 |
8 | 1109890 |
9 | 9888011 |
10 | 50549945 |
11 | 212087791 |
12 | 1110988900 |
13 | 9099998991 |
14 | 10210987891 |
15 | 100998890010 |
16 | 1020199887991 |
17 | 1121198778001 |
18 | 12232187668001 |
19 | 50049949450005 |
20 | 212431985468021 |
[1,9,109,990,1099,99900,100999,1008891,1109890, 9888011,50549945,212087791,1110988900,9099998991, 10210987891,100998890010,1020199887991, 1121198778001,12232187668001,50049949450005, 212431985468021] |