n | a(n) |
---|---|
1 | 7 |
2 | 8 |
3 | 77 |
4 | 78 |
5 | 87 |
6 | 88 |
7 | 777 |
8 | 778 |
9 | 787 |
10 | 788 |
11 | 877 |
12 | 878 |
13 | 887 |
14 | 888 |
15 | 7777 |
16 | 7778 |
17 | 7787 |
18 | 7788 |
19 | 7877 |
20 | 7878 |
21 | 7887 |
22 | 7888 |
23 | 8777 |
24 | 8778 |
25 | 8787 |
26 | 8788 |
27 | 8877 |
28 | 8878 |
29 | 8887 |
30 | 8888 |
31 | 77777 |
32 | 77778 |
33 | 77787 |
34 | 77788 |
35 | 77877 |
36 | 77878 |
37 | 77887 |
38 | 77888 |
39 | 78777 |
40 | 78778 |
41 | 78787 |
42 | 78788 |
43 | 78877 |
44 | 78878 |
[7,8,77,78,87,88,777,778,787,788,877,878,887,888, 7777,7778,7787,7788,7877,7878,7887,7888,8777,8778, 8787,8788,8877,8878,8887,8888,77777,77778,77787, 77788,77877,77878,77887,77888,78777,78778,78787, 78788,78877,78878] |