n | a(n) |
---|---|
1 | 5 |
2 | 7 |
3 | 557 |
4 | 577 |
5 | 757 |
6 | 5077 |
7 | 5507 |
8 | 5557 |
9 | 7057 |
10 | 7507 |
11 | 7577 |
12 | 7757 |
13 | 50077 |
14 | 50707 |
15 | 50777 |
16 | 55057 |
17 | 57077 |
18 | 57557 |
19 | 70507 |
20 | 75557 |
21 | 75577 |
22 | 75707 |
23 | 77557 |
24 | 500057 |
25 | 500777 |
26 | 505777 |
27 | 507077 |
28 | 507557 |
29 | 507757 |
30 | 550007 |
31 | 550577 |
32 | 550757 |
33 | 555077 |
34 | 555557 |
35 | 555707 |
36 | 557057 |
37 | 570077 |
38 | 575077 |
[5,7,557,577,757,5077,5507,5557,7057,7507,7577, 7757,50077,50707,50777,55057,57077,57557,70507, 75557,75577,75707,77557,500057,500777,505777, 507077,507557,507757,550007,550577,550757,555077, 555557,555707,557057,570077,575077] |