G.f. A(x) satisfies: A(x) = 1 / (1 - x - x * A(-2*x)).

A349032

G.f. A(x) satisfies: A(x) = 1 / (1 - x - x * A(-2*x)).

Terms

    a(0) =1a(1) =2a(2) =0a(3) =-8a(4) =48a(5) =1024a(6) =-29376a(7) =-2008960a(8) =249483264a(9) =64889376256

External references