2135234

// 123.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <math.h>
#include <iostream>

using namespace std;


int _tmain(int argc, _TCHAR* argv[])
{
	int k, i, p, u, m;
	double s=0, w;
	cout << "k= ";
	cin >> k;
	for (i=1; i<=k; i++)
	{
		for (u=i; u<=i; u++)
		{
			m=i+1;
			p *= m;
		}
		if (i=2)
			w=0;
		else
			w = pow(-1., i)*p/(i*i-4);

		s+=w;


	}
	cout << "w= " << s << endl;
	system("pause");

	return 0;
}