#include <iostream>
#include <cstdio>
using namespace std;
double a,n=2.0,k=1;
int main()
{
printf("n e\n- -----------\n");
printf("0 1\n1 2\n");
for(int x=2; x<10; x++)
{
cout<<x<<" ";
k*=x;
n+=(double)1/k;
if(x>=3) printf("%.9lf\n",n);
else printf("%.1lf\n",n);
}
}