数列an+1=an2+an(n+1为脚标),a1=1,求证1/(a1+1)+1/(a2+1)+1/(a3+1)+...+1(an+1)

问题描述:

数列an+1=an2+an(n+1为脚标),a1=1,求证1/(a1+1)+1/(a2+1)+1/(a3+1)+...+1(an+1)