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