A192354 - cp's OEIS frontend

A192354 Coefficients of x in 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	0
2	1
3	1
4	14
5	27
6	165
7	428
8	2001
9	6069
10	25042
11	82555
12	319793
13	1101816
14	4131009
15	14567657
16	53697270
17	191684283
18	700312381
19	2515972324
20	9149426897
21	32981059485
22	119645675898
23	432046756571
24	1565346866889
25	5657752486512
26	20484930829825

[0, 1, 1, 14, 27, 165, 428, 2001, 6069, 25042, 82555, 319793, 1101816, 4131009, 14567657, 53697270, 191684283, 700312381, 2515972324, 9149426897, 32981059485, 119645675898, 432046756571, 1565346866889, 5657752486512, 20484930829825]

cp's OEIS Frontend

A192354 Coefficients of x in 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