已知数列满足a1=7/8且an+1=1/2an+1/3,n∈N,证明(1){an-2/3}是等比数列(2)求an

已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an 已知数列{an}满足An+1=2^nAn,且A1=1,则通项an 已知数列｛an｝满足an=an+1 -lg2,且a1=1,则通项公式为? 已知数列{an}满足：an+1=an+n,且a61=2002,则a1等于 已知数列{an}中满足(An+1-An)(An+1+An)=16,且a1=1,an 已知数列an满足a1=7/8,且an+1=1/2an+1/3,n是正整数,求an通项公式 已知数列,an满足a1=1,a3+a7=18,且an-1+an+1=2an 已知数列an满足an+1/an=n+2/n且a1=1,则an= 已知数列{an}满足,an+2=an+1-an,且a10=-1,a9=0,求a1 已知数列｛an｝满足a1=4/3,且an+1=4（n+1）an/3an+n 已知数列[an]满足An+1=1+an /3-an ,且a1=1/3,求证数列[1/(an -1）]是等差数列,并求an 数列an满足,a1=8且8an+1an-16an+1+2an+5=0 已知数列{an}满足(n+1)an+1=an+n,且a1=2,则a2010=? 已知数列an满足an=1+2+...n,且（1/a1）+(1/a2）+...(1/an) 已知数列{an}满足3a(n+1)=2an-4,且a1=1/5,求an 已知数列｛an｝满足a(n+1)=an+3n+2,且a1=2,求an=? 已知数列an满足a(n+1)=an+3n+2,且a1=2,求an 已知数列（an）满足a50=50,且an+1=an+n,则a1的值是?