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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.

A096684 Least k such that decimal representation of k*n contains only digits 0 and 5.

Table of values

n a(n)
1 5
2 25
3 185
4 125
5 1
6 925
7 715
8 625
9 61728395
10 5
11 5
12 4625
13 385
14 3575
15 37
16 3125
17 3265
18 308641975
19 2895
20 25
21 2405
22 25
23 23935
24 23125
25 2
26 1925
27 203909465
28 17875
29 189845
30 185
31 17905
32 15625
33 16835
34 16325
35 143
36 1543209875
37 15
38 14475
39 1295
40 125
41 1355

List of values

[5, 25, 185, 125, 1, 925, 715, 625, 61728395, 5, 5, 4625, 385, 3575, 37, 3125, 3265, 308641975, 2895, 25, 2405, 25, 23935, 23125, 2, 1925, 203909465, 17875, 189845, 185, 17905, 15625, 16835, 16325, 143, 1543209875, 15, 14475, 1295, 125, 1355]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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