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Re:请问公式是怎么推的阿?

Posted by think_exist at 2009-10-26 13:17:27 on Problem 1737
In Reply To:Re:请问公式是怎么推的阿? Posted by:huatao at 2008-03-23 10:27:06
> m = C(n,2); p = pow(2,m);
> f(n) = p - (C(n,1)f(1)+C(n,2)f(2)+...+C(n,n-1)f(n-1));

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