#include<cstdio>
#include<cstring>
using namespace std;
int main()
{
	freopen("magic.in","r",stdin);
	freopen("magic.out","w",stdout);
	int n,i,j,k,f[40][40];
	memset(f,0,sizeof(f));
	scanf("%d",&n);
	f[1][n/2+1]=1;
	i=1;
	j=n/2+1;
	for (k=2;k<=n*n;k++)
	  {
	  	if (i==1 && j!=n)
	  	  {
	  	  	f[n][j+1]=k;
	  	  	i=n;
	        j++;
	        continue;
		  }
		if (j==n && i!=1)
		  {
		  	f[i-1][1]=k;
		  	i--;
		  	j=1;
		  	continue;
		  }
		if (i==1 && j==n)
		  {
		  	f[i+1][j]=k;
		  	i++;
		  	continue;
		  }
		if (i!=1 && j!=n)
		  if (f[i-1][j+1]==0)
		    {
		  	  f[i-1][j+1]=k;
		  	  i--;
		  	  j++;
		  	  continue;
			}
		  else
		    {
		      f[i+1][j]=k;
		      i++;
		      continue;
			}
	  }
	for (i=1;i<=n;i++)
	  {
	  	for (j=1;j<=n;j++)
	      printf("%d ",f[i][j]);
	    printf("\n");
	  }
	fclose(stdin);
	fclose(stdout);
	return 0;
}