n | a(n) |
---|---|
1 | 2 |
2 | 19 |
3 | 199 |
4 | 1999 |
5 | 19997 |
6 | 199999 |
7 | 2999999 |
8 | 19999999 |
9 | 199999991 |
10 | 1999999973 |
11 | 19999999967 |
12 | 299999999989 |
13 | 1999999999981 |
14 | 19999999999997 |
15 | 399999999999997 |
16 | 1999999999999943 |
17 | 49999999999999993 |
18 | 199999999999999949 |
19 | 1999999999999999909 |
20 | 19999999999999999939 |
[2,19,199,1999,19997,199999,2999999,19999999, 199999991,1999999973,19999999967,299999999989, 1999999999981,19999999999997,399999999999997, 1999999999999943,49999999999999993, 199999999999999949,1999999999999999909, 19999999999999999939] |