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

A349013

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

Terms

    a(0) =1a(1) =1a(2) =3a(3) =14a(4) =119a(5) =1938a(6) =62291a(7) =3990822a(8) =510954584a(9) =130812494690

External references