cp's OEIS Frontend

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.

A232629 Coefficients of the algebraic number 2*sin(4*Pi/n) in the power basis of Q(2*cos(Pi/q(2,n))), with q(2,n) = A232625(n), n >= 1.

Table of values

n a(n)
1 0
2 0
3 0
4 -1
5 0
6 0
7 -3
8 0
9 1
10 0
11 1
12 0
13 1
14 0
15 0
16 0
17 0
18 2
19 0
20 1
21 0
22 0
23 0
24 0
25 0
26 1
27 0
28 0
29 0
30 -3
31 0
32 1
33 0
34 0
35 0
36 0
37 0
38 0
39 0
40 1
41 0
42 5
43 0
44 -5
45 0
46 1
47 0
48 0
49 0
50 0
51 0
52 0
53 0
54 -3
55 0
56 1
57 0
58 0
59 0
60 -7
61 0
62 14
63 0
64 -7
65 0
66 1
67 0
68 1
69 0
70 9
71 0
72 -30
73 0
74 27
75 0
76 -9
77 0
78 1
79 0
80 0
81 0
82 0
83 0
84 0
85 0
86 5
87 0
88 -5
89 0
90 1
91 0
92 -11
93 0
94 55
95 0
96 -77
97 0
98 44
99 0
100 -11
101 0
102 1
103 0
104 0
105 0
106 0
107 0
108 0
109 0
110 -3
111 0
112 1

List of values

[0, 0, 0, -1, 0, 0, -3, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, -3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 5, 0, -5, 0, 1, 0, 0, 0, 0, 0, 0, 0, -3, 0, 1, 0, 0, 0, -7, 0, 14, 0, -7, 0, 1, 0, 1, 0, 9, 0, -30, 0, 27, 0, -9, 0, 1, 0, 0, 0, 0, 0, 0, 0, 5, 0, -5, 0, 1, 0, -11, 0, 55, 0, -77, 0, 44, 0, -11, 0, 1, 0, 0, 0, 0, 0, 0, 0, -3, 0, 1]