求下列数列的通项公式:2/3.4/15.6/35.8/63.10/99

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求下列数列的通项公式:2/3.4/15.6/35.8/63.10/99

求下列数列的通项公式:2/3.4/15.6/35.8/63.10/99
求下列数列的通项公式:2/3.4/15.6/35.8/63.10/99

求下列数列的通项公式:2/3.4/15.6/35.8/63.10/99
an=2n/((2n-1)x(2n+1))

(n+1)/n*(n+2)