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

A013539

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

Terms

    a(0) =-1a(1) =13a(2) =877a(3) =2675a(4) =8260913a(5) =410433607a(6) =223758294041

External references