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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.

A069862 Smallest k such that n divides the concatenation of numbers from (n+1) to (n+k), where (n+1) is on the most significant side.

Table of values

n a(n)
1 1
2 2
3 2
4 2
5 5
6 2
7 9
8 4
9 8
10 10
11 10
12 8
13 22
14 16
15 5
16 4
17 2
18 8
19 3
20 20
21 20
22 10
23 17
24 12
25 25
26 22
27 26
28 16
29 25
30 20
31 110
32 20
33 11
34 2
35 20
36 8
37 998
38 52
39 38
40 20
41 60
42 20
43 4
44 32
45 35
46 42
47 50
48 20
49 96
50 50
51 2
52 96
53 93
54 26
55 10
56 20
57 3
58 50
59 44
60 20
61 46
62 40
63 45
64 40
65 50
66 32
67 86
68 32
69 17
70 20
71 75
72 72
73 26
74 926
75 50

List of values

[1, 2, 2, 2, 5, 2, 9, 4, 8, 10, 10, 8, 22, 16, 5, 4, 2, 8, 3, 20, 20, 10, 17, 12, 25, 22, 26, 16, 25, 20, 110, 20, 11, 2, 20, 8, 998, 52, 38, 20, 60, 20, 4, 32, 35, 42, 50, 20, 96, 50, 2, 96, 93, 26, 10, 20, 3, 50, 44, 20, 46, 40, 45, 40, 50, 32, 86, 32, 17, 20, 75, 72, 26, 926, 50]

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

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