有一列数 a1,a2……an,期中 a1=2,a2-a1=4,a3-a2=6,a4-a3=8……,a n-a n-1=2n(1)我会 就不写了(2)若3/a1+3/a2+3/a3+……3/an的结果是6036/2013,求正整数n的值.
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![有一列数 a1,a2……an,期中 a1=2,a2-a1=4,a3-a2=6,a4-a3=8……,a n-a n-1=2n(1)我会 就不写了(2)若3/a1+3/a2+3/a3+……3/an的结果是6036/2013,求正整数n的值.](/uploads/image/z/2108946-66-6.jpg?t=%E6%9C%89%E4%B8%80%E5%88%97%E6%95%B0+a1%2Ca2%E2%80%A6%E2%80%A6an%2C%E6%9C%9F%E4%B8%AD+a1%3D2%2Ca2-a1%3D4%2Ca3-a2%3D6%2Ca4-a3%3D8%E2%80%A6%E2%80%A6%2Ca+n-a+n-1%3D2n%281%EF%BC%89%E6%88%91%E4%BC%9A+%E5%B0%B1%E4%B8%8D%E5%86%99%E4%BA%86%EF%BC%882%EF%BC%89%E8%8B%A53%2Fa1%2B3%2Fa2%2B3%2Fa3%2B%E2%80%A6%E2%80%A63%2Fan%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AF6036%2F2013%2C%E6%B1%82%E6%AD%A3%E6%95%B4%E6%95%B0n%E7%9A%84%E5%80%BC.)
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