#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 - j;
            int right = size - 1 - j;
            int minDist = top;
            if(left < minDist) minDist = left;
            if(bottom < minDist) minDist = bottom;
            if(right < minDist) minDist = right;
            int value = n - minDist + 1;
            printf