#include <stdio.h> 



#define LL long long  
using namespace std;  
const int N = 1000000007;  
LL s[1000005];  
  
void x(){  
    s[0] = s[1] = 1;  
    for(int i = 2; i <= 1000000; i++)  
        s[i] = (s[i - 1] + (i - 1) * s[i - 2]) % N;  
}  
int main(){  
    x();  
    int T, n;  
    scanf("%d", &T);  
    for(int t = 1; t <= T; t++){  
        scanf("%d", &n);  
        printf("Case #%d:\n%d\n", t, s[n]);  
    }  
    return 0;  
}