1/(1+x)+2/(1+x^2)+4/(1+x^4)+8/(1+x^8)+…+n/(1+x^n)-2n/(1-x^2n)=1/(1-x)+1/(1+x)+2/(1+x^2)+4/(1+x^4)+8/(1+x^8)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x)=(1+x+1-x)/(1-x^2)+2/(1+x^2)+4/(1+x^4)+8/(1+x^8)+…+n/(1+x^...