已知数列{an}满足a1=4,2a n+1=an+1.(1)求{an}的通项公式;(2)若要使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a1=2,an=a(n-1)+2n,（n≥2）,求an 已知数列{an}满足a1=33,a(n+1)-an=2n,则an/n的最小值 已知数列{an}满足a1=33,a（n+1）-an=2n,求an/n的最小值 已知数列an满足:a1=1,an-a(n-1)=n n大于等于2 求an 已知数列an满足a1=100,a(n+1)-an=2n,则(an)/n的最小值为 已知数列an满足a1=1,an=a1+2a2+3a3+4a4+.(n-1)a(n-1),求通项an 已知数列{an}满足a1=2,a(n+1)-an=a(n+1）*an,则a31=? 已知数列{an}满足a(n+1)=an+n,a1=1,则an= 已知数列{a}满足a1=1/2,a（n+1）=an+1/(n^2+n),求an已知数列{a}满足a1=1/2,a（n+1）=an+1/(n^2+n),求an 已知数列{an}满足a1=1,an=4a(n-1)/[2a(n-1)+1] (n>=2)求数列{an}的通项公式证明不等式:a1+a2+…+an>(3n-16)/2 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}满足条件a1=3,且a( n+1)-an=(20)^n+n,求通项公式已知数列{an}满足条件a1=3,且a( n+1)-an=(2)^n+n,求通项公式 已知数列an满足条件a1=-2 a（n+1）=2an/(1-an) 则an= 已知数列an满足a1=1,a(n+1)=an/(3an+2),则an=? 已知数列{an}满足a1=4且a(n+1),an,3成等差数列,其中.已知数列｛an}满足a1=4且a(n+1),an,3成等差数列,其中n属于正自然数.1.求证：数列｛an-3}是等比数列2.令bn=2n×an-6n,求数列｛bn}的通项公式以及前n项 已知数列{an}满足a1=4/3,2-a(n+1)=12/an+6则1/a1+2/a2+.1/an=?