E.g.f. exp(sinh(x)^2) (even powers only).

A009236

E.g.f. exp(sinh(x)^2) (even powers only).

Terms

    a(0) =1a(1) =2a(2) =20a(3) =392a(4) =12560a(5) =579872a(6) =36034880a(7) =2874676352a(8) =284538241280

External references