-Python:
n=int(input('n= '))
t=0
for i in range(1,2*n):
if i%2!=0:
t+=i**3
print('Tong=',t)
#include <bits/stdc++.h>
using namespace std;
long long i,n,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=2*n; i++)
if (i%2!=0) t+=pow(i,3);
cout<<t;
return 0;
}