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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.

A059892 a(n) = |{m : multiplicative order of 10 mod m is equal to n}|.

Table of values

n a(n)
1 3
2 3
3 5
4 6
5 9
6 53
7 9
8 36
9 12
10 33
11 9
12 186
13 21
14 33
15 111
16 144
17 9
18 564
19 3
20 330
21 239
22 273
23 3
24 1756
25 84
26 165
27 76
28 714
29 93
30 16167
31 21
32 5952
33 111
34 177
35 363
36 4288
37 21
38 15
39 99
40 5724
41 45
42 48807
43 45
44 4314
45 1140
46 183
47 9
48 14192
49 36
50 2940
51 495
52 1338
53 45
54 11572
55 747
56 11484

List of values

[3, 3, 5, 6, 9, 53, 9, 36, 12, 33, 9, 186, 21, 33, 111, 144, 9, 564, 3, 330, 239, 273, 3, 1756, 84, 165, 76, 714, 93, 16167, 21, 5952, 111, 177, 363, 4288, 21, 15, 99, 5724, 45, 48807, 45, 4314, 1140, 183, 9, 14192, 36, 2940, 495, 1338, 45, 11572, 747, 11484]

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

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