设数列{an}是等差数列,a5=6.
(1)当a3=3时,请在数列{an}中找一项am,使得a3,a5,am成等比数列;
(2)当a3=2时,若自然数n1,n2,…,nt,… (t∈N*)满足5<n1<n2<…<nt<…使得a3,a5,,,…,,…是等比数列,求数列{nt}的通项公式.
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设数列{an}是等差数列,a5=6.
(1)当a3=3时,请在数列{an}中找一项am,使得a3,a5,am成等比数列;
(2)当a3=2时,若自然数n1,n2,…,nt,… (t∈N*)满足5<n1<n2<…<nt<…使得a3,a5,,,…,,…是等比数列,求数列{nt}的通项公式.