#include <stdio.h>
int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid Input");
        return 0;
        
        
    }
    int size =2 * n -1;
    for(int i=0;i<size;i++){
        for(int j=0;j<size;j++){
            int top=i;
            int left=j;
            int right = size -1 -j;
            int bottom = size -1 -i;
            
            int min =top;
            if (left<min)min =left;
            if (right<min)min =right;
            if (bottom <min)min =bottom;
            printf("%d", n-min);
        }
        printf("\n")
    }
}