G.f.: A(x) satisfies: A( 4*x - 3*A(x) ) = x - 4*x^2.

A292812

G.f.: A(x) satisfies: A( 4*x - 3*A(x) ) = x - 4*x^2.

Terms

    a(0) =1a(1) =2a(2) =-12a(3) =216a(4) =-5616a(5) =186624a(6) =-7387200a(7) =335736576a(8) =-17124804864a(9) =965515500288

External references