#include<stdio.h>
int main()
{
    int n;
    scanf("%d", &n);
    if(n < 0)
    {
        printf("Invalid Input");
    }
    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 right-size = 1-j;
            int bottom-size = 1-i;
            int minDist = top;
            if(left < minDist) minDist = left;
            if(right < minDist) minDist = right;
            if(bottom < minDist) minDist = bottom;
            
            printf("%d", n-minDist);
        }
        printf("\n");
    }
    return 0;
}