A192353 - cp's OEIS frontend

A192353 Constant term of the reduction of the polynomial p(n,x)=(1/2)((x+2)^n+(x-2)^n) by x^2->x+1.

n	a(n)
1	1
2	0
3	5
4	1
5	42
6	43
7	429
8	820
9	4861
10	12597
11	58598
12	177859
13	732825
14	2417416
15	9358677
16	32256553
17	120902914
18	426440955
19	1571649221
20	5610955132
21	20497829133
22	73645557469
23	267803779710
24	965384509651
25	3502058316337
26	12646311635088
27	45818284122149

[1, 0, 5, 1, 42, 43, 429, 820, 4861, 12597, 58598, 177859, 732825, 2417416, 9358677, 32256553, 120902914, 426440955, 1571649221, 5610955132, 20497829133, 73645557469, 267803779710, 965384509651, 3502058316337, 12646311635088, 45818284122149]

cp's OEIS Frontend

A192353 Constant term of the reduction of the polynomial p(n,x)=(1/2)((x+2)^n+(x-2)^n) by x^2->x+1.

Table of values

List of values