A228785 - cp's OEIS frontend

A228785 Table of coefficients of the algebraic number s(2l+1) = 2sin(Pi/(2l+1)) as a polynomial in odd powers of rho(2(2l+1)) = 2cos(Pi/(2(2l+1))) (reduced version).

n	a(n)
1	1
2	-3
3	1
4	5
5	-5
6	1
7	-4
8	5
9	-1
10	9
11	-30
12	27
13	-9
14	1
15	-11
16	55
17	-77
18	44
19	-11
20	1
21	4
22	-13
23	7
24	-1
25	-15
26	140
27	-378
28	450
29	-275
30	90
31	-15
32	1
33	17
34	-204
35	714
36	-1122
37	935
38	-442
39	119
40	-17
41	1
42	-4
43	25
44	-26
45	9
46	-1
47	0
48	21
49	-385
50	2079
51	-5148
52	7007
53	-5733
54	2940
55	-952
56	189
57	-21
58	1
59	-8
60	126
61	-539
62	967
63	-870
64	429
65	-118
66	17
67	-1
68	0

[1, -3, 1, 5, -5, 1, -4, 5, -1, 9, -30, 27, -9, 1, -11, 55, -77, 44, -11, 1, 4, -13, 7, -1, -15, 140, -378, 450, -275, 90, -15, 1, 17, -204, 714, -1122, 935, -442, 119, -17, 1, -4, 25, -26, 9, -1, 0, 21, -385, 2079, -5148, 7007, -5733, 2940, -952, 189, -21, 1, -8, 126, -539, 967, -870, 429, -118, 17, -1, 0]

cp's OEIS Frontend

A228785 Table of coefficients of the algebraic number s(2l+1) = 2sin(Pi/(2l+1)) as a polynomial in odd powers of rho(2(2l+1)) = 2cos(Pi/(2(2l+1))) (reduced version).

Table of values

List of values

cp's OEIS Frontend

A228785 Table of coefficients of the algebraic number s(2*l+1) = 2*sin(Pi/(2*l+1)) as a polynomial in odd powers of rho(2*(2*l+1)) = 2*cos(Pi/(2*(2*l+1))) (reduced version).

Table of values

List of values

A228785 Table of coefficients of the algebraic number s(2l+1) = 2sin(Pi/(2l+1)) as a polynomial in odd powers of rho(2(2l+1)) = 2cos(Pi/(2(2l+1))) (reduced version).