ζ⁡s=∑k=1N1ks+N1-ss-1-12⁢N-s+∑k=1ns+2⁢k-22⁢k-1⁢B2⁢k2⁢k⁢N1-s-2⁢k-s+2⁢n2⁢n+1⁢∫N∞B~2⁢n+1⁡xxs+2⁢n+1⁢ⅆ⁡x,