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Re:c(2 ,2 ) = c( 1 , 1) + c( 1 ,2 ) 这里的c(1 ,2) 无定义怎么处理???

Posted by index at 2007-04-28 16:11:59 on Problem 3219
In Reply To:c(2 ,2 ) = c( 1 , 1) + c( 1 ,2 ) 这里的c(1 ,2) 无定义怎么处理??? Posted by:zengkui at 2007-04-28 13:14:16
C(n, k) = C(n − 1, k − 1) + C(n − 1, k) for all 0 < k < n.

here k <n 

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