α^n,m(s)=12⁢π⁢∫02⁢πcos⁡t⁢sen⁡(t,h2)⁢sem⁡(t,h2)⁢ⅆ⁡t=(-1)p⁢2ⅈ⁢π⁢sen′⁡(0,h2)⁢sem′⁡(0,h2)h⁢Ds2⁡(n,m,0).