设数列{An}的前n项和为Sn若An+1=3Sn,a1=1则a6=
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设数列{An}的前n项和为Sn若An+1=3Sn,a1=1则An=
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【高考】若数列{an}满足,a1=1,且a(n+1)=an/(1+an),设数列{bn}的前n项和为Sn,且Sn=2-bn,求{bn/an}的前...【高考】若数列{an}满足,a1=1,且a(n+1)=an/(1+an),设数列{bn}的前n项和为Sn,且Sn=2-bn,求{bn/an}的前n项和Tn
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