#include<stdio.h>
int main()
{
    int a[100][100]={0};
    int k,m,n,i,j;
    scanf("%d",&n);
    m=n/2-1;
    i=0;
    j=n-1;
    for (k=1;k<=n*n;k++)
    {
        a[i][j]=k;
        if (j==n-1 && i<n-1)
            {i++;continue;}
        if (i==n-1 && j >0)
            {j--; continue;}
        if (i>0 && j == 0)
            {i--; continue;}
        if (i==0 && a[i][j+1]==0)
            {j++; continue;}
        if (j>m && a[i+1][j]==0 && a[i][j+1]!=0)
            {i++; continue;}
        if (i>m && a[i][j-1]==0)
            {j--; continue;}
        if (j<=m && a[i-1][j]==0)
            {i--; continue;}
        if (i<=m && a[i][j+1]==0)
            {j++; continue;}
    }
    for (i=0;i<n;i++)
    {
        for (j=0;j<n;j++)
            printf("%d ",a[i][j]);
        printf("\n");
    }
    return 0;
}