E.g.f. satisfies: A(x) = (1+x)/(1+3*x) * A(x*(1+x)^2).

A179330

E.g.f. satisfies: A(x) = (1+x)/(1+3*x) * A(x*(1+x)^2).

Terms

    a(0) =0a(1) =2a(2) =-6a(3) =42a(4) =-468a(5) =7080a(6) =-133128a(7) =2938824a(8) =-73169568a(9) =1997384832a(10) =-58814501760

External references