已知数列{an}满足:a1=2,a2=3,2an+1=3an-an-1(n》2)(1)求数列{an}的通项公式an;(2)求使不等式an-m/an+1-m〈2/3成立的所有正整数m,n的值n+1,n,n-1角标
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