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=1;
int nsp=2*N-1;
int row=1;
while(row<=m)
{
int val=N;
int value=N;
for(int cst=1;cst<=nst;cst++)
{ System.out.print(val+" ");
if(cst<=m/2)
val--;
else
val++;
}
for(int csp=1;csp<=nsp;csp++)
{
System.out.print(" ");
}
int cst=1;
if(row==(m/2)+1)
{
cst=2;
}
for(;cst<=nst;cst++)
{
System.out.print(value+" ");
if(cst<=m/2)
value--;
else
value++;
}
System.out.println();
if(row<=m/2)
{
nst++;
nsp=nsp-2;
}
else
{
nst--;
nsp=nsp+2;
}
row++;
}
}
}