一直数列{an}满足a1=0,an=（an-1 +4）/(2an-1) ,求 an

一直数列{an}满足a1=0,an=（an-1 +4）/(2an-1) ,求 an 已知数列an满足a1=1,1/an+1=根号1/an^2+2,an>0,求an 一直数列{An}满足A1=1/2,A1+A2+…+An=n^2An 数列｛an｝满足a1=1,且an=an-1+3n-2,求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=4an+9,则an=? 关于数列极限的已知数列an满足a1=0 a2=1 an=(an-1+an-2)/2 求lim(n->无穷）an 已知数列{an}满足a1=1,an+1=2an+1 1）求证：数列{an+1}为等比数列； 2) 求{an}的通项an 已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an 已知数列（an）满足an+1=2an+3×2∧n,a1=2求an 设数列{an}满足a1=0,4an+1=4an+2根号(4an+1)+1,令bn=根号（4an+1）