G.f. A(x) satisfies: [x^n] A_{n}(x) = [x^n] A_{n+1}(x) for n>2 where A_{n+1}(x) = A_{n}(A(x)) denotes iteration with A_0(x)=x.

A177776

G.f. A(x) satisfies: [x^n] A_{n}(x) = [x^n] A_{n+1}(x) for n>2 where A_{n+1}(x) = A_{n}(A(x)) denotes iteration with A_0(x)=x.

Terms

    a(0) =1a(1) =1a(2) =-6a(3) =80a(4) =-1570a(5) =39914a(6) =-1242192a(7) =45954240a(8) =-1986728358a(9) =99266274404

External references