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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.

A011772 Smallest number m such that m(m+1)/2 is divisible by n.

Table of values

n a(n)
1 1
2 3
3 2
4 7
5 4
6 3
7 6
8 15
9 8
10 4
11 10
12 8
13 12
14 7
15 5
16 31
17 16
18 8
19 18
20 15
21 6
22 11
23 22
24 15
25 24
26 12
27 26
28 7
29 28
30 15
31 30
32 63
33 11
34 16
35 14
36 8
37 36
38 19
39 12
40 15
41 40
42 20
43 42
44 32
45 9
46 23
47 46
48 32
49 48
50 24
51 17
52 39
53 52
54 27
55 10
56 48
57 18
58 28
59 58
60 15
61 60
62 31
63 27
64 127
65 25
66 11
67 66
68 16
69 23
70 20
71 70
72 63
73 72
74 36
75 24

List of values

[1, 3, 2, 7, 4, 3, 6, 15, 8, 4, 10, 8, 12, 7, 5, 31, 16, 8, 18, 15, 6, 11, 22, 15, 24, 12, 26, 7, 28, 15, 30, 63, 11, 16, 14, 8, 36, 19, 12, 15, 40, 20, 42, 32, 9, 23, 46, 32, 48, 24, 17, 39, 52, 27, 10, 48, 18, 28, 58, 15, 60, 31, 27, 127, 25, 11, 66, 16, 23, 20, 70, 63, 72, 36, 24]

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