E.g.f. sec(arcsinh(x)) = cosec(arccosh(x)) (even powers only).

A102072

E.g.f. sec(arcsinh(x)) = cosec(arccosh(x)) (even powers only).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =25a(4) =-415a(5) =35825a(6) =-3356575a(7) =492769225a(8) =-96314333375

External references