n | a(n) |
---|---|
1 | 7 |
2 | 787 |
3 | 877 |
4 | 887 |
5 | 7877 |
6 | 8887 |
7 | 78787 |
8 | 78877 |
9 | 78887 |
10 | 87877 |
11 | 87887 |
12 | 777787 |
13 | 777877 |
14 | 778777 |
15 | 787777 |
16 | 878777 |
17 | 888887 |
18 | 7778777 |
19 | 7788787 |
20 | 7877777 |
21 | 7878877 |
22 | 7878887 |
23 | 7888877 |
24 | 8787887 |
25 | 8788777 |
26 | 8877787 |
27 | 8887777 |
28 | 77778887 |
29 | 77787887 |
30 | 77877887 |
[7,787,877,887,7877,8887,78787,78877,78887,87877, 87887,777787,777877,778777,787777,878777,888887, 7778777,7788787,7877777,7878877,7878887,7888877, 8787887,8788777,8877787,8887777,77778887,77787887, 77877887] |