#include<stdio.h>
int main()
{
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
int day,x1,x2;
scanf("%d",&day);
{ x2=1;
while(day)
{
x1=(x2+1)*2;
x2=x1;
day--;
}printf("%d\n",x1);}
}return 0;
}
#include<stdio.h>
int main()
{
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
int day,x1,x2;
scanf("%d",&day);
{ x2=1;
while(day)
{
x1=(x2+1)*2;
x2=x1;
day--;
}printf("%d\n",x1);}
}return 0;
}