cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A096686 Least k such that decimal representation of k*n contains only digits 0 and 7.

Table of values

n a(n)
1 7
2 35
3 259
4 175
5 14
6 1295
7 1
8 875
9 86419753
10 7
11 7
12 6475
13 539
14 5
15 518
16 4375
17 4571
18 432098765
19 4053
20 35
21 37
22 35
23 33509
24 32375
25 28
26 2695
27 285473251
28 25
29 265783
30 259
31 25067
32 21875
33 23569
34 22855
35 2
36 2160493825
37 21
38 20265
39 1813
40 175
41 1897
42 185
43 179249

List of values

[7, 35, 259, 175, 14, 1295, 1, 875, 86419753, 7, 7, 6475, 539, 5, 518, 4375, 4571, 432098765, 4053, 35, 37, 35, 33509, 32375, 28, 2695, 285473251, 25, 265783, 259, 25067, 21875, 23569, 22855, 2, 2160493825, 21, 20265, 1813, 175, 1897, 185, 179249]