{}
import java.util.*;
class Pattern {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.print("enter the rows=");
int n=sc.nextInt();
for(int i=1; i<=2*n-1; i++){
System.out.print(i+" ");
}
n--;
System.out.println();
for(int i=1; i<=n; i++){
int a=1;
for(int j=1; j<=n+1-i; j++){
System.out.print(a+" ");
a++;
}
for(int j=1;j<=2*i-1; j++){
System.out.print(" "+" ");
a++;
}
for(int j=1; j<=n+1-i;j++){
System.out.print(a+" ");
a++;
}
System.out.println();
}
}
}