αν,m(0)=12⁢π⁢∫02⁢πcos⁡t⁢meν⁡(t,h2)⁢me-ν-2⁢m-1⁡(t,h2)⁢ⅆ⁡t=(-1)m⁢2⁢ⅈπ⁢meν⁡(0,h2)⁢me-ν-2⁢m-1⁡(0,h2)h⁢D0⁡(ν,ν+2⁢m+1,0),