E.g.f. satisfies A(x) = 1/(1 - A(x)^2 * (exp(x) - 1))^2.

A377489

E.g.f. satisfies A(x) = 1/(1 - A(x)^2 * (exp(x) - 1))^2.

Terms

    a(0) =1a(1) =2a(2) =24a(3) =548a(4) =18996a(5) =889532a(6) =52623924a(7) =3767367788a(8) =316781141316

External references