Numerator of the coefficient [x^(2n+1)] of the Taylor series arctanh(cosec(x) - coth(x)).

A013545

Numerator of the coefficient [x^(2n+1)] of the Taylor series arctanh(cosec(x) - coth(x)).

Terms

    a(0) =-1a(1) =13a(2) =29a(3) =397a(4) =74927a(5) =2570951a(6) =495301a(7) =2978520989a(8) =879781928617

External references