import java.util.*;

public class Main{
    public static void print(String a){
        System.out.println(a);
    }
    public static void print(int a){
        System.out.println(a);
    }
    public static void print(long a){
        System.out.println(a);
    }
    public static int  pow(int a,int b){
        int res=1;
        while (b>0){
            if (b%2==1){
                res*=a;
            }
            a*=a;b>>=1;
        }
        return res;
    }
    public static int pow(int a,int b,int mod){
        int res=1;
        while (b>1){
            if (b%2==1){
                res=res*a%mod;
            }
            a=a*a%mod;b>>=1;
        }
        return res;
    }
    public static long  pow(long a,long b){
        long res=1;
        while (b>0){
            if (b%2==1){
                res*=a;
            }
            a*=a;b>>=1;
        }
        return res;
    }
    public static long pow(long a,long b,long mod){
        long res=1;
        while (b>1){
            if (b%2==1){
                res=res*a%mod;
            }
            a=a*a%mod;b>>=1;
        }
        return res;
    }
    public static int abs(int a){
        if (a<0){
            return -a;
        }
        return a;
    }
    public static long abs(long a){
        if (a<0){
            return -a;
        }
        return a;
    }
    public static int gcd(int x,int y){
        if (Math.min(x,y)==0){
            return Math.max(x,y);
        }
        int z;
        while (x%y>0){
            z=x%y;
            x=y;y=z;
        }
        return y;
    }
    public static long gcd(long x,long y){
        if (Math.min(x,y)==0){
            return Math.max(x,y);
        }
        long z;
        while (x%y>0){
            z=x%y;
            x=y;y=z;
        }
        return y;
    }
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        String [][] a=new String [n][n];
        int b=0;int c=0;int d=0;
        while (d<n*n){
            while (c<n && a[b][c]==null){
                d++;
                String p=""+d;
                while (p.length()<3){
                    p="0"+p;
                }
                a[b][c]=p;c++;
            }
            c--;
            b++;
            while (b<n && a[b][c]==null){
                d++;
                String p=""+d;
                while (p.length()<3){
                    p="0"+p;
                }
                a[b][c]=p;b++;
            }
            b--;c--;
            while (c>=0 && a[b][c]==null){
                d++;
                String p=""+d;
                while (p.length()<3){
                    p="0"+p;
                }
                a[b][c]=p;
                c--;
            }
            c++;b--;
            while (b>=0 && a[b][c]==null){
                d++;
                String p=""+d;
                while (p.length()<3){
                    p="0"+p;
                }
                a[b][c]=p;b--;
            }
            b++;c++;
        }
        for (int i=0;i<n;i++){
            for (int j=0;j+1<n;j++){
                System.out.print(a[i][j]+" ");
            }
            print(a[i][n-1]);
        }
        sc.close();
    }
}