γν,m=12⁢π⁢∫02⁢πmeν′⁡(t)⁢me-ν-2⁢m⁡(t)⁢ⅆ⁡t=(-1)m⁢4⁢ⅈπ⁢meν′⁡(0)⁢me-ν-2⁢m⁡(0)D1⁡(ν,ν+2⁢m,0).