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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.

A066438 a(n) = 7^n mod n.

Table of values

n a(n)
1 0
2 1
3 1
4 1
5 2
6 1
7 0
8 1
9 1
10 9
11 7
12 1
13 7
14 7
15 13
16 1
17 7
18 1
19 7
20 1
21 7
22 5
23 7
24 1
25 7
26 23
27 1
28 21
29 7
30 19
31 7
32 1
33 13
34 15
35 28
36 1
37 7
38 11
39 31
40 1
41 7
42 7
43 7
44 25
45 37
46 3
47 7
48 1
49 0
50 49
51 37
52 9
53 7
54 1
55 43
56 49
57 1
58 49
59 7
60 1
61 7
62 49
63 28
64 1
65 37
66 37
67 7
68 21
69 67
70 49
71 7
72 1
73 7
74 49
75 43
76 45
77 28
78 25
79 7
80 1

List of values

[0, 1, 1, 1, 2, 1, 0, 1, 1, 9, 7, 1, 7, 7, 13, 1, 7, 1, 7, 1, 7, 5, 7, 1, 7, 23, 1, 21, 7, 19, 7, 1, 13, 15, 28, 1, 7, 11, 31, 1, 7, 7, 7, 25, 37, 3, 7, 1, 0, 49, 37, 9, 7, 1, 43, 49, 1, 49, 7, 1, 7, 49, 28, 1, 37, 37, 7, 21, 67, 49, 7, 1, 7, 49, 43, 45, 28, 25, 7, 1]

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