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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.

A070347 a(n) = 2^n mod 21.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 16
5 11
6 1
7 2
8 4
9 8
10 16
11 11
12 1
13 2
14 4
15 8
16 16
17 11
18 1
19 2
20 4
21 8
22 16
23 11
24 1
25 2
26 4
27 8
28 16
29 11
30 1
31 2
32 4
33 8
34 16
35 11
36 1
37 2
38 4
39 8
40 16
41 11
42 1
43 2
44 4
45 8
46 16
47 11
48 1
49 2
50 4
51 8
52 16
53 11
54 1
55 2
56 4
57 8
58 16
59 11
60 1
61 2
62 4
63 8
64 16
65 11
66 1
67 2
68 4
69 8
70 16
71 11
72 1
73 2
74 4
75 8
76 16
77 11
78 1
79 2
80 4
81 8
82 16
83 11
84 1
85 2
86 4
87 8
88 16
89 11

List of values

[1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11, 1, 2, 4, 8, 16, 11]

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