设数列{an}中,a1=2,an+1=an+n,则通项an=
设数列{an}中,a1=2,an+1=an+n,则通项an=设数列{an}中,a1=2,an+1—an=3·2(2n-1次方),则通项an=...
设数列{an}中,a1=2,an+1=an+n,则通项an=
设数列{an}中,a1=2,an+1—an=3·2(2n-1次方),则通项an= 展开
设数列{an}中,a1=2,an+1—an=3·2(2n-1次方),则通项an= 展开
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