#include<iostream>
using namespace std;
int arr[50][50]={0};
int Row,Column;
void func(int i,int row,int column,int num){
    if (row==1&&column!=num){
        arr[num][column+1]=i;
        Row=num;
        Column=column+1;
    }else if (column==num&&row!=1){
        arr[row-1][1]=i;
        Row=row-1;
        Column=1;
    }else if (column==num&&row==1){
        arr[row-1][column]=i;
        Row=row-1;
    }else if (column!=num&&row!=1){
        if (arr[row-1][column+1]==0){
            arr[row-1][column+1]=i;
            Row=row-1;
            Column=column+1;
        }else{
            arr[row+1][column]=i;
            Row=row+1;
        }
    }
}
int main(){
    int i;
    cin>>i;
    arr[1][i/2+1]=1;
    Row=1;
    Column=i/2+1;
    for (int j = 2; j <= i*i; ++j) {
        func(j,Row,Column,i);
    }
    for (int j = 1; j <= i; ++j) {
        for (int k = 1; k <= i; ++k) {
            cout<<arr[j][k]<<" ";
        }
        cout<<endl;
    }
    return 0;
}