已知数列{an}满足an>0,a1=3 根号下[a(n+1)]=(根号下an)+1 （n属于N*) 则an=?

已知数列{an}满足an>0,a1=3 根号下[a(n+1)]=(根号下an)+1 （n属于N*) 则an=? 已知数列{an}满足a1=0 a(n+1)=(an-根号3）/(根号3an+1) (n属于N*）,则a20=? 已知数列{an}满足a1=0,an+1=(an-根号3)/(根号3an+1) (n属于N+),则该数列中a20=____ 已知数列an满足 a1=0,an+1=根号3倍的an再加1 分之an-根号3,n属于n*则a20等于? 已知数列{an}满足,a1=2,a(n+1)=3根号an,求通项an 若数列{an}满足a1=根号6 a(n+1)=根号下an+6 (n∈N*) 如果lim an 存在,求lim an的值[ 已知数列{an}满足a1=2,根号下a(n+1)/2an等于n+1/n,求{an}的通项公式? 一道高三数列题,急已知数列{an},满足a1=a+2(a大于等于0)an+1=根号下(an+a)/2,n属于N* (1) 已知数列{an}中,n属于N*,an>0 其前n项和为Sn 满足2根号下Sn=an+1 数列an满足a1=1,an-an-1=1/根号n+1+根号n,则an= 数列竞赛题已知数列{an},a1=0,a(n+1)=5an+根号下(24*an^2+1）求an 设数列｛an}满足a1=2,an+1=an+1/an(n=1,2,3.),证明：an>根号下（2n+1).急用