数列满足a1=1 1/＜2an+1＞=1/2an+1 n∈N* 若a1a2+a2a3+...+anan+1>16/33,求n的取值范围

数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an 数列{an}满足a1=1 an+1=2n+1an/an+2n 数列｛an｝满足a1=1,且an=an-1+3n-2,求an 数列an满足a1=2,an+1=4an+9,则an=? 已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 数列an满足a1=2,an+1=an²求an 数列an满足a1=2,an+1=an²求an 已知数列{an}满足a1=1/2,an+1=3an+1,求数列{an}通项公式 数列an满足a1=1/2,a1+a2+a3……an=n^2an,则an 已知数列{An}满足A1=1,An+1=2An+2^n.求证数列An/2是等差数列 数列an满足a1=1/2 an+1=an/(2an+3) 猜想数列通项公式 急!.数列{an}满足a1=2,an+1=-1/an+1,则a2010=? 已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an 数列{an}满足a1=a,an+1=1+1/an.若3/2 数列an满足a1=1,a(n+1)=an/[(2an)+1],求a2010 已知数列满足a1=1 ,an+1+2an=2 求an 已知数列an满足条件a1=-2 an+1=2an+1则a5 数列an满足a1=1/3,Sn=n(2n-1)an,求an