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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.

A357260 a(n) is the number of 2 X 2 Euclid-reduced matrices having coprime elements and determinant n.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 8
7 7
8 9
9 9
10 14
11 11
12 16
13 13
14 20
15 18
16 19
17 17
18 28
19 19
20 26
21 26
22 32
23 23
24 36
25 25
26 38
27 31
28 38
29 29
30 54
31 31
32 41
33 42
34 50
35 38
36 56
37 37
38 56
39 50
40 56
41 41
42 76
43 43
44 62
45 58
46 68
47 47
48 78
49 49
50 78
51 66
52 74
53 53
54 92
55 62
56 76
57 74
58 86
59 59
60 114
61 61
62 92
63 78
64 85
65 74
66 124
67 67
68 98
69 90
70 118

List of values

[1, 2, 3, 4, 5, 8, 7, 9, 9, 14, 11, 16, 13, 20, 18, 19, 17, 28, 19, 26, 26, 32, 23, 36, 25, 38, 31, 38, 29, 54, 31, 41, 42, 50, 38, 56, 37, 56, 50, 56, 41, 76, 43, 62, 58, 68, 47, 78, 49, 78, 66, 74, 53, 92, 62, 76, 74, 86, 59, 114, 61, 92, 78, 85, 74, 124, 67, 98, 90, 118]

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

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