设数列{an}的前n项和为Sn，已知a1=a，an+1=Sn

设数列{an}的前n项和为Sn，已知a1=a，an+1=Sn 设数列an的前n项和为Sn,已知a1=1,Sn+1=4an+2 设数列{an}的前n项和为Sn．已知a1=a，an+1=Sn+3n，n∈N*．由 设数列{an}的前n项和为Sn,a1=10,a(n+1)=9Sn+10 设数列An的前n项和为Sn,已知a1=1,An+1=Sn+3n+1求证数列｛An+3}是等比数列 一道数学题：设数列{an}的前n项和为Sn.已知a1=a,a(n+1)=Sn+3^n,n属于N*. 一道数学题：设数列{an}的前n项和为Sn.已知a1=a,a(n-1)=Sn+3^n,n属于N. 设数列an的前n项和为Sn,已知a1=1,(2Sn)/n=a(n+1)-1/3n^2-n-2/3 设数列{an}的前n项和为Sn,已知a1=a,an+1=Sn+3^n,n∈N+.设bn=Sn+3n,求数列{bn}的通项 设数列{an}的前n项和为sn,已知a1=a,an+1=sn+3^n,n∈N* (1)设bn=sn-3^n,求数列{bn 已知数列 an前n项和为Sn,a1=1,Sn=2a(n+1),求Sn 设数列｛an｝的前n项和为Sn,已知a1=1,Sn+1=4an+2,求数列AN的通项公式