#include<bits/stdc++.h>
using namespace std;
int n,x,y;
int p[40][40];
int main(){
    freopen("2015magic.in","r",stdin);
    freopen("2015magic.out","w",stdout);
    cin>>n;
    x=1,y=n/2+1;
    p[x][y]=1;
    for(int i=2;i<=n*n;i++){
        int lx=x,ly=y;
        x--,y++;
        if(x==0&&y==n+1) x=lx+1,y=ly;
        else if(x==0) x=n;
        else if(y==n+1) y=1;
        if(p[x][y]) x=lx+1,y=ly;
        p[x][y]=i;
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            printf("%d ",p[i][j]);
        }
        puts("");
    }
}