已知数列{an}中,满足an-2\an=2n,且an

例1.已知数列{an}中,an-2/an=2n,且an〈0 已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an 已知数列{an}中,a1=1,满足an+1=an+2n,n属于N*,则an等于 数列｛an｝满足a1=1,且an=an-1+3n-2,求an 已知数列an满足1/a-an=2根号n,且an>0.求an的通项公式 已知数列an中满足a1=1且当n.=2时,2an*a*(n-1)+an-a(n-1)=0,求通项公式an 已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 已知数列an满足:an+1-2an=2^n+1,且a1=2 (1)证明{an/2^n}是等差数列 (2)求数列an的 已知数列{an中}a1=3.且an+1=an+2的n次方 已知数列{an}的首项a1=1,且{an}满足an=n(n+an-1),其中n大于等于2,求{an}的通项 已知数列{an}满足:a1=1,且an-an-1=2n,求(1)a2,a3,a4.(2)求数列{an}的通项an 若数列{An}满足An+1=An^2,则称数列{An}为“平方递推数列”,已知数列{an}中,a1=9,点（an,an+