设数列{an}的前n项和为Sn,且满足an=2-Sn(n∈N*).
设数列{an}的前n项和为Sn,且满足an=2-Sn(n∈N*).
设数列{an}前n项和为Sn,数列{Sn}的前n项和为Tn,满足Tn=2Sn-n2,n∈N*.
设数列{an}的前n项和为Sn,且2an=Sn+2n+1(n∈N*).
设数列{an}的前n项和为Sn,且Sn=2^n-1.
已知数列{an}的各项均为正数,前n项和为Sn,且满足2Sn=an2+n-4(n∈N*).
已知数列{an}的前n项和为Sn,且满足Sa+Sn=n (n属于N)
已知数列an的首项a1=5,前n项和为Sn,且S(n+1)=2Sn+n+5(n∈N*),求数列{an}的前n项和Sn,设
设数列an的前n项和为sn,且a1为1 ,Sn+1=4an+2(n∈N正)
设数列{an}的前n项和为Sn,对任意n∈N*满足2Sn=an(an+1),且an≠0 (1)求数列an的通项公式
设数列{an}的前n项和为Sn,且对任意正整数n,an+Sn=4096.
已知数列{an}的首项a1=5,前n项和为Sn,且Sn+1=2Sn+n+5(n∈N*).
已知数列{an}的首项是a1=1,前n项和为Sn,且Sn+1=2Sn+3n+1(n∈N*).