// editor5
#include<stdio.h>
#include<stdlib.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 bottom = size-1-i;
            int right = 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");
    }
    r
}