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

A214363

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

Terms

    a(0) =1a(1) =1a(2) =3a(3) =27a(4) =285a(5) =3585a(6) =56595a(7) =1062131a(8) =22868685a(9) =557624745a(10) =15204727395a(11) =458112683787

External references