n | a(n) |
---|---|
1 | 5 |
2 | 53 |
3 | 59 |
4 | 577 |
5 | 599 |
6 | 5333 |
7 | 59999 |
8 | 511111 |
9 | 599999 |
10 | 59999999 |
11 | 577777777 |
12 | 59999999999 |
13 | 5111111111111 |
14 | 53333333333333 |
15 | 59999999999999 |
16 | 577777777777777 |
17 | 5111111111111111 |
18 | 577777777777777777 |
[5,53,59,577,599,5333,59999,511111,599999, 59999999,577777777,59999999999,5111111111111, 53333333333333,59999999999999,577777777777777, 5111111111111111,577777777777777777] |