A039991 - cp's OEIS frontend

A039991 Triangle of coefficients of cos(x)^n in polynomial for cos(nx).

n	a(n)
0	1
1	1
2	0
3	2
4	0
5	-1
6	4
7	0
8	-3
9	0
10	8
11	0
12	-8
13	0
14	1
15	16
16	0
17	-20
18	0
19	5
20	0
21	32
22	0
23	-48
24	0
25	18
26	0
27	-1
28	64
29	0
30	-112
31	0
32	56
33	0
34	-7
35	0
36	128
37	0
38	-256
39	0
40	160
41	0
42	-32
43	0
44	1
45	256
46	0
47	-576
48	0
49	432
50	0
51	-120
52	0
53	9
54	0
55	512
56	0
57	-1280
58	0
59	1120
60	0
61	-400
62	0
63	50
64	0
65	-1
66	1024
67	0
68	-2816
69	0
70	2816
71	0
72	-1232
73	0
74	220
75	0
76	-11
77	0

[1, 1, 0, 2, 0, -1, 4, 0, -3, 0, 8, 0, -8, 0, 1, 16, 0, -20, 0, 5, 0, 32, 0, -48, 0, 18, 0, -1, 64, 0, -112, 0, 56, 0, -7, 0, 128, 0, -256, 0, 160, 0, -32, 0, 1, 256, 0, -576, 0, 432, 0, -120, 0, 9, 0, 512, 0, -1280, 0, 1120, 0, -400, 0, 50, 0, -1, 1024, 0, -2816, 0, 2816, 0, -1232, 0, 220, 0, -11, 0]

cp's OEIS Frontend

A039991 Triangle of coefficients of cos(x)^n in polynomial for cos(nx).

Table of values

List of values