A192466 - cp's OEIS frontend

A192466 Coefficient of x in the reduction by x^2->x+2 of the polynomial p(n,x)=1+x^n+x^(2n).

n	a(n)
1	2
2	6
3	24
4	90
5	352
6	1386
7	5504
8	21930
9	87552
10	349866
11	1398784
12	5593770
13	22372352
14	89483946
15	357924864
16	1431677610
17	5726666752
18	22906579626
19	91626143744
20	366504225450
21	1466016202752
22	5864063412906
23	23456250855424
24	93824997829290

[2, 6, 24, 90, 352, 1386, 5504, 21930, 87552, 349866, 1398784, 5593770, 22372352, 89483946, 357924864, 1431677610, 5726666752, 22906579626, 91626143744, 366504225450, 1466016202752, 5864063412906, 23456250855424, 93824997829290]

cp's OEIS Frontend

A192466 Coefficient of x in the reduction by x^2->x+2 of the polynomial p(n,x)=1+x^n+x^(2n).

Table of values

List of values