import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner s=new Scanner(System.in);
int n=s.nextInt();
int m=2*n+1;
int nst=n;
int nsp=0;
int row=1;
while(row<=m)
{
for(int csp=1;csp<=nsp;csp++)
{
System.out.print(" ");
}
for(int cst=nst;cst>=0;cst--)
{
System.out.print(cst);
}
int cst=1;
for(;cst<=nst;cst++) {
System.out.print(cst);
}
System.out.println();
if(row<=m/2)
{
nsp++;
nst--;
}
else
{
nsp--;
nst++;
}
row++;
}
}
}