Denominators of Taylor series for sec(x). Also denominators of Taylor series for sech(x) = 1/cosh(x).

A046977

Denominators of Taylor series for sec(x). Also denominators of Taylor series for sech(x) = 1/cosh(x).

Terms

    a(0) =1a(1) =2a(2) =24a(3) =720a(4) =8064a(5) =3628800a(6) =95800320a(7) =87178291200

External references