A192465 - cp's OEIS frontend

A192465 Constant term of the reduction by x^2->x+2 of the polynomial p(n,x)=1+x^n+x^(2n).

n	a(n)
1	3
2	9
3	25
4	93
5	353
6	1389
7	5505
8	21933
9	87553
10	349869
11	1398785
12	5593773
13	22372353
14	89483949
15	357924865
16	1431677613
17	5726666753
18	22906579629
19	91626143745
20	366504225453
21	1466016202753
22	5864063412909
23	23456250855425
24	93824997829293

[3, 9, 25, 93, 353, 1389, 5505, 21933, 87553, 349869, 1398785, 5593773, 22372353, 89483949, 357924865, 1431677613, 5726666753, 22906579629, 91626143745, 366504225453, 1466016202753, 5864063412909, 23456250855425, 93824997829293]

cp's OEIS Frontend

A192465 Constant term of the reduction by x^2->x+2 of the polynomial p(n,x)=1+x^n+x^(2n).

Table of values

List of values