月之数

 1 #include <stdio.h>
 2 #include <math.h>
 3 
 4 int main(){
 5     int T;
 6     int number;
 7     double result;
 8     double temp;
 9     
10     scanf("%d",&T);
11     
12     while(T--){
13         scanf("%d",&number);
14         temp=pow(2.0,(number-1));
15         
16         result=(temp+(temp/2*(number-1)));
17         
18         printf("%.0lf\n",result);
19     }        
20     return 0;
21 }