#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 right = size - 1 - j;
            
            int minDist = top;
            int(left < minDist) minDist = left;
            int(bottom < minDist) minDist = bottom;
            int(right < minDist) minDist = right;
            
            printf("%d",n-minDist);
        }
        printf("\n");
    }
    return 0;
}