A192473 - cp's OEIS frontend

A192473 Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x)=1+x^n+x^(2n+2).

n	a(n)
1	4
2	9
3	23
4	58
5	149
6	385
7	1000
8	2605
9	6799
10	17766
11	46457
12	121537
13	318044
14	832417
15	2178919
16	5703874
17	14931949
18	39090753
19	102338336
20	267921061
21	701419679
22	1836329614
23	4807555633
24	12586315393
25	32951355124
26	86267692665
27	225851630135

[4, 9, 23, 58, 149, 385, 1000, 2605, 6799, 17766, 46457, 121537, 318044, 832417, 2178919, 5703874, 14931949, 39090753, 102338336, 267921061, 701419679, 1836329614, 4807555633, 12586315393, 32951355124, 86267692665, 225851630135]

cp's OEIS Frontend

A192473 Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x)=1+x^n+x^(2n+2).

Table of values

List of values