已知数列{an}满足an+1=[(n+1)/2n]·an,且a1=1/2,则其通项an=?
已知数列{an}满足an+1=[(n+1)/2n]·an,且a1=1/2,则其通项an=?
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an=1+2+...+n,且1/a1+1/a2+...+1/an
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
数列{an}满足a1=1,且an=an-1+3n-2,求an
已知数列{an}满足a1=1,an+1=2an/(an+2)(n∈N+),则数列{an}的通项公式为
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列{an}中,a1=1,满足an+1=an+2n,n属于N*,则an等于
已知数列{an}满足a1=1,an=(an-1)/3an-1+1,(n>=2,n属于N*),求数列{an}的通项公式
设数列{an}满足an+1/an=n+2/n+1,且a1=2
已知数列{an}满足a1=100,an+1-an=2n,则a
已知数列{an}满足a1=33,an+1-an=2n 则求an/n?