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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.

A333669 The smallest nontrivial quadratic residue modulo n.

Table of values

n a(n)
5 4
6 3
7 2
8 4
9 4
10 4
11 3
12 4
13 3
14 2
15 4
16 4
17 2
18 4
19 4
20 4
21 4
22 3
23 2
24 4
25 4
26 3
27 4
28 4
29 4
30 4
31 2
32 4
33 3
34 2
35 4
36 4
37 3
38 4
39 3
40 4
41 2
42 4
43 4
44 4
45 4
46 2
47 2
48 4
49 2
50 4
51 4
52 4
53 4
54 4
55 4
56 4
57 4
58 4
59 3
60 4
61 3
62 2
63 4
64 4
65 4
66 3
67 4
68 4
69 3
70 4
71 2
72 4
73 2
74 3
75 4
76 4
77 4
78 3
79 2
80 4
81 4
82 2
83 3
84 4
85 4
86 4
87 4
88 4

List of values

[4, 3, 2, 4, 4, 4, 3, 4, 3, 2, 4, 4, 2, 4, 4, 4, 4, 3, 2, 4, 4, 3, 4, 4, 4, 4, 2, 4, 3, 2, 4, 4, 3, 4, 3, 4, 2, 4, 4, 4, 4, 2, 2, 4, 2, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 3, 2, 4, 4, 4, 3, 4, 4, 3, 4, 2, 4, 2, 3, 4, 4, 4, 3, 2, 4, 4, 2, 3, 4, 4, 4, 4, 4]

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