A192469 - cp's OEIS frontend

A192469 Coefficient of x in the reduction by x^2->x+3 of the polynomial p(n,x)=1+x^n+x^(2n).

n	a(n)
1	2
2	8
3	44
4	224
5	1178
6	6200
7	32786
8	173600
9	919988
10	4877072
11	25858754
12	137115440
13	727074530
14	3855471416
15	20444603516
16	108412922240
17	574888887530
18	3048505597160
19	16165538467442
20	85722217226576
21	454565670533252
22	2410459729834544

[2, 8, 44, 224, 1178, 6200, 32786, 173600, 919988, 4877072, 25858754, 137115440, 727074530, 3855471416, 20444603516, 108412922240, 574888887530, 3048505597160, 16165538467442, 85722217226576, 454565670533252, 2410459729834544]

cp's OEIS Frontend

A192469 Coefficient of x in the reduction by x^2->x+3 of the polynomial p(n,x)=1+x^n+x^(2n).

Table of values

List of values