E.g.f. satisfies: A'(x) = A(x)^2/A(-x)^2, with A(0)=1.

A235166

E.g.f. satisfies: A'(x) = A(x)^2/A(-x)^2, with A(0)=1.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =16a(4) =88a(5) =640a(6) =5440a(7) =54400a(8) =620800a(9) =7966720a(10) =113651200a(11) =1783091200a(12) =30519808000a(13) =565916876800

External references