-1,1/3,-9/35,17/63,-33/99,...求数列通式

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-1,1/3,-9/35,17/63,-33/99,...求数列通式-1,1/3,-9/35,17/63,-33/99,...求数列通式-1,1/3,-9/35,17/63,-33/99,...求数列

-1,1/3,-9/35,17/63,-33/99,...求数列通式
-1,1/3,-9/35,17/63,-33/99,...求数列通式