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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.

A197520 Decimal expansion of least x>0 having cos(2*Pi*x)=(cos 3x)^2.

Table of values

n a(n)
0 9
1 0
2 6
3 3
4 6
5 2
6 2
7 3
8 6
9 5
10 3
11 8
12 7
13 2
14 1
15 4
16 1
17 7
18 5
19 1
20 9
21 6
22 9
23 1
24 9
25 2
26 2
27 7
28 5
29 8
30 8
31 4
32 6
33 9
34 1
35 0
36 3
37 1
38 2
39 0
40 8
41 8
42 7
43 1
44 0
45 3
46 0
47 1
48 9
49 2
50 0
51 1
52 8
53 0
54 4
55 1
56 4
57 4
58 0
59 8
60 9
61 3
62 8
63 8
64 7
65 3
66 7
67 2
68 3
69 9
70 2
71 8
72 6
73 2
74 0
75 8
76 5
77 9
78 6
79 8
80 1
81 5
82 6
83 0
84 8
85 2
86 0
87 2
88 8
89 8
90 5
91 2
92 4
93 6
94 7
95 6
96 1
97 3
98 4

List of values

[9, 0, 6, 3, 6, 2, 2, 3, 6, 5, 3, 8, 7, 2, 1, 4, 1, 7, 5, 1, 9, 6, 9, 1, 9, 2, 2, 7, 5, 8, 8, 4, 6, 9, 1, 0, 3, 1, 2, 0, 8, 8, 7, 1, 0, 3, 0, 1, 9, 2, 0, 1, 8, 0, 4, 1, 4, 4, 0, 8, 9, 3, 8, 8, 7, 3, 7, 2, 3, 9, 2, 8, 6, 2, 0, 8, 5, 9, 6, 8, 1, 5, 6, 0, 8, 2, 0, 2, 8, 8, 5, 2, 4, 6, 7, 6, 1, 3, 4]