#include<cstdio>
#include<iostream>
using namespace std;
__int64 a[1000005];
int main()
{
    a[1]=1;
    a[2]=2;
    for(int i=3;i<=1000000;i++)
    {
        a[i]=(a[i-1]+(i-1)*a[i-2])%1000000007;
    }
    int T,N,s;
    cin>>T;
    s=1;
    while(T--)
    {
        cin>>N;
        cout<<"Case #"<<s<<":"<<endl;
        cout<<a[N]<<endl;
        s++;
    }
    return 0;
}