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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.

A378865 a(n) is the smallest positive integer k such that n*k uses none of the digits of n, or 0 if no such k exists.

Table of values

n a(n)
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 0
11 2
12 3
13 2
14 2
15 2
16 2
17 2
18 2
19 2
20 0
21 3
22 2
23 2
24 4
25 4
26 3
27 2
28 2
29 2
30 0
31 2
32 2
33 2
34 2
35 2
36 2
37 3
38 2
39 2
40 0
41 2
42 4
43 2
44 2
45 2
46 2
47 4
48 2
49 12
50 0
51 4
52 2
53 2
54 2
55 2
56 2
57 2
58 2
59 2
60 0
61 4
62 5
63 3
64 2
65 2
66 2
67 2
68 3
69 2
70 0
71 4
72 2
73 2
74 3
75 4
76 2
77 2
78 2
79 2
80 0
81 3
82 2
83 2
84 3

List of values

[2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 2, 3, 2, 2, 2, 2, 2, 2, 2, 0, 3, 2, 2, 4, 4, 3, 2, 2, 2, 0, 2, 2, 2, 2, 2, 2, 3, 2, 2, 0, 2, 4, 2, 2, 2, 2, 4, 2, 12, 0, 4, 2, 2, 2, 2, 2, 2, 2, 2, 0, 4, 5, 3, 2, 2, 2, 2, 3, 2, 0, 4, 2, 2, 3, 4, 2, 2, 2, 2, 0, 3, 2, 2, 3]

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