A192468 - cp's OEIS frontend

A192468 Constant term of the reduction by x^2->x+3 of the polynomial p(n,x)=1+x^n+x^(2n).

n	a(n)
1	4
2	16
3	61
4	304
5	1546
6	8107
7	42748
8	226240
9	1198645
10	6353944
11	33688474
12	178631251
13	947215924
14	5022815920
15	26634734125
16	141237718720
17	748951245034
18	3971518837243
19	21060069709228
20	111676816254688
21	592197081386533
22	3140288211876136

[4, 16, 61, 304, 1546, 8107, 42748, 226240, 1198645, 6353944, 33688474, 178631251, 947215924, 5022815920, 26634734125, 141237718720, 748951245034, 3971518837243, 21060069709228, 111676816254688, 592197081386533, 3140288211876136]

cp's OEIS Frontend

A192468 Constant term of the reduction by x^2->x+3 of the polynomial p(n,x)=1+x^n+x^(2n).

Table of values

List of values