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