Numerator of the coefficient [x^(2n)] of the Taylor series cos(cosec(x) - coth(x)).

A013541

Numerator of the coefficient [x^(2n)] of the Taylor series cos(cosec(x) - coth(x)).

Terms

    a(0) =1a(1) =-1a(2) =217a(3) =-214279a(4) =824071a(5) =-337533513773

External references