Rn(1)⁡(z)=(-1)n-1⁢ⅈ⁢ⅇ(μ2-μ1)⁢π⁢ⅈ⁢ⅇλ2⁢z⁢zμ2⁢(C1⁢∑s=0m-1(-1)s⁢as,2⁢Fn+μ2-μ1-s⁡(z)zs+Rm,n(1)⁡(z)),