A009116 - cp's OEIS frontend

A009116 Expansion of e.g.f. cos(x) / exp(x).

n	a(n)
0	1
1	-1
2	0
3	2
4	-4
5	4
6	0
7	-8
8	16
9	-16
10	0
11	32
12	-64
13	64
14	0
15	-128
16	256
17	-256
18	0
19	512
20	-1024
21	1024
22	0
23	-2048
24	4096
25	-4096
26	0
27	8192
28	-16384
29	16384
30	0
31	-32768
32	65536
33	-65536
34	0
35	131072
36	-262144
37	262144
38	0
39	-524288
40	1048576
41	-1048576
42	0
43	2097152
44	-4194304

[1, -1, 0, 2, -4, 4, 0, -8, 16, -16, 0, 32, -64, 64, 0, -128, 256, -256, 0, 512, -1024, 1024, 0, -2048, 4096, -4096, 0, 8192, -16384, 16384, 0, -32768, 65536, -65536, 0, 131072, -262144, 262144, 0, -524288, 1048576, -1048576, 0, 2097152, -4194304]

cp's OEIS Frontend

A009116 Expansion of e.g.f. cos(x) / exp(x).

Table of values

List of values