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.

A232624 Coefficient array for the minimal polynomials of 2*cos(2*Pi/n) for n >= 1.

Table of values

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

List of values

[-2, 1, 2, 1, 1, 1, 0, 1, -1, 1, 1, -1, 1, -1, -2, 1, 1, -2, 0, 1, 1, -3, 0, 1, -1, -1, 1, 1, 3, -3, -4, 1, 1, -3, 0, 1, -1, 3, 6, -4, -5, 1, 1, 1, -2, -1, 1, 1, 4, -4, -1, 1, 2, 0, -4, 0, 1, 1, -4, -10, 10, 15, -6, -7, 1, 1, -1, -3, 0, 1, 1, 5, -10, -20, 15, 21, -7, -8, 1, 1, 5, 0, -5, 0, 1, 1, -8, 8, 6, -6, -1, 1, -1, 3, 3, -4, -1, 1]