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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.

A317387 Square array T(n, k) read by antidiagonals upwards, n > 0 and k > 0: T(n, k) is the least positive multiple of n that contains k as a substring in its decimal representation.

Table of values

n a(n)
1 1
2 10
3 2
4 12
5 2
6 3
7 12
8 12
9 30
10 4
11 10
12 12
13 3
14 4
15 5
16 12
17 20
18 32
19 24
20 50
21 6
22 14
23 12
24 30
25 4
26 15
27 6
28 7
29 16
30 21
31 30
32 40
33 52
34 6
35 70
36 8
37 18
38 24
39 35
40 24
41 5
42 16
43 27
44 8
45 9
46 10
47 27
48 32
49 14
50 54
51 60
52 72
53 18
54 90
55 10
56 11
57 20
58 36
59 24
60 35
61 6
62 70
63 8
64 9
65 10
66 11
67 12
68 22
69 30
70 45

List of values

[1, 10, 2, 12, 2, 3, 12, 12, 30, 4, 10, 12, 3, 4, 5, 12, 20, 32, 24, 50, 6, 14, 12, 30, 4, 15, 6, 7, 16, 21, 30, 40, 52, 6, 70, 8, 18, 24, 35, 24, 5, 16, 27, 8, 9, 10, 27, 32, 14, 54, 60, 72, 18, 90, 10, 11, 20, 36, 24, 35, 6, 70, 8, 9, 10, 11, 12, 22, 30, 45]

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

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