已知数列{an}满足na(n+1下角标)=2(n+1)an(n为N*),a1=1.
已知数列{an}满足na(n+1下角标)=2(n+1)an(n为N*),a1=1.
已知数列{an}满足an+an+1=2n+1(n∈N*),求证:数列{an}为等差数列的充要条件是a1=1.
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+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+n+1(n∈N*).
已知数列满足{an}满足a1=2,an+1=an-{n(n+1)分之一}
已知数列(An)满足A1=1 An+1=3An 数列(Bn)前n项和Sn=n*n+2n+1
已知数列{an}满足a1=312,且3an+1=an(n∈N*,n≥1)
已知数列满足:A1=1.AN+1=1/2AN+N,N奇数,AN-2N.N偶数
已知数列an的前n项和为sn,且满足sn=n²an-n²(n-1),a1=1/2
已知数列{an}满足a1=1,an+1=Sn+(n+1)(n∈N*),其中Sn为{an}的前n项和,
已知数列{an}满足a1=33,a(n+1)-an=2n则an/n的最小值为_____.