n | a(n) |
---|---|
0 | 0 |
1 | 7 |
2 | 70 |
3 | 77 |
4 | 700 |
5 | 707 |
6 | 770 |
7 | 777 |
8 | 7000 |
9 | 7007 |
10 | 7070 |
11 | 7077 |
12 | 7700 |
13 | 7707 |
14 | 7770 |
15 | 7777 |
16 | 70000 |
17 | 70007 |
18 | 70070 |
19 | 70077 |
20 | 70700 |
21 | 70707 |
22 | 70770 |
23 | 70777 |
24 | 77000 |
25 | 77007 |
26 | 77070 |
27 | 77077 |
28 | 77700 |
29 | 77707 |
30 | 77770 |
31 | 77777 |
32 | 700000 |
33 | 700007 |
34 | 700070 |
35 | 700077 |
36 | 700700 |
37 | 700707 |
38 | 700770 |
39 | 700777 |
[0,7,70,77,700,707,770,777,7000,7007,7070,7077, 7700,7707,7770,7777,70000,70007,70070,70077,70700, 70707,70770,70777,77000,77007,77070,77077,77700, 77707,77770,77777,700000,700007,700070,700077, 700700,700707,700770,700777] |