n | a(n) |
---|---|
0 | 4 |
1 | 49 |
2 | 499 |
3 | 4999 |
4 | 49999 |
5 | 499999 |
6 | 4999999 |
7 | 49999999 |
8 | 499999999 |
9 | 4999999999 |
10 | 49999999999 |
11 | 499999999999 |
12 | 4999999999999 |
13 | 49999999999999 |
14 | 499999999999999 |
15 | 4999999999999999 |
16 | 49999999999999999 |
17 | 499999999999999999 |
18 | 4999999999999999999 |
[4,49,499,4999,49999,499999,4999999,49999999, 499999999,4999999999,49999999999,499999999999, 4999999999999,49999999999999,499999999999999, 4999999999999999,49999999999999999, 499999999999999999,4999999999999999999] |