G.f.: A(x) satisfies: A( 5*x - 4*A(x) ) = x - 9*x^2.

A292813

G.f.: A(x) satisfies: A( 5*x - 4*A(x) ) = x - 9*x^2.

Terms

    a(0) =1a(1) =3a(2) =-24a(3) =624a(4) =-23040a(5) =1102848a(6) =-63320064a(7) =4204118016a(8) =-315301920768

External references