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