#include<stdio.h>
#include<stdlib.h>

int main() {
    int n;
    scanf("%d",&n);
    
    if(n<0) {
        printf("Invalid input\n");
        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 bottom =size-1-i;
            int ringt =size-1-j;
            
            int min =top;
            if(left<min)min =left;
            if(bottom<min)min =bottom;
            if(right<min)min =right;
            
            printf("%d",n-min);
        }
        printf("\n");
    }
    return 0;
}