17 lines
369 B
C++
17 lines
369 B
C++
#include<iostream>
|
|
#include<cmath>
|
|
using namespace std;
|
|
int main(){
|
|
int i;
|
|
long long a[32] = { 0, 0, 0 }, c = 0, b = 2,t;
|
|
for (i = 3; i < 32; ++i)
|
|
{
|
|
a[i] = a[i - 1] * 4 + (long long)(pow(2, i - 1) - 2) * 2 + (c + b) * 2;
|
|
t = c + b*2;
|
|
b = (c + b)*2 + 2;
|
|
c = t;
|
|
}
|
|
for (i = 2; i < 32; ++i)
|
|
cout << "N=" << i <<": " << a[i] << endl;
|
|
}
|