n | a(n) |
---|---|
1 | 7 |
2 | 97 |
3 | 997 |
4 | 9973 |
5 | 99991 |
6 | 999983 |
7 | 9999991 |
8 | 99999989 |
9 | 999999937 |
10 | 9999999967 |
11 | 99999999977 |
12 | 999999999989 |
13 | 9999999999971 |
14 | 99999999999973 |
15 | 999999999999989 |
16 | 9999999999999937 |
17 | 99999999999999997 |
18 | 999999999999999989 |
19 | 9999999999999999961 |
20 | 99999999999999999989 |
[7,97,997,9973,99991,999983,9999991,99999989, 999999937,9999999967,99999999977,999999999989, 9999999999971,99999999999973,999999999999989, 9999999999999937,99999999999999997, 999999999999999989,9999999999999999961, 99999999999999999989] |