Coefficient of x in the reduction by x^2->x+2 of the polynomial p(n,x) defined below in Comments.

A192459

Coefficient of x in the reduction by x^2->x+2 of the polynomial p(n,x) defined below in Comments.

Terms

    a(0) =1a(1) =3a(2) =17a(3) =133a(4) =1315a(5) =15675a(6) =218505a(7) =3485685a(8) =62607195a(9) =1250116875a(10) =27468111825a(11) =658579954725

External references