#include <stdio.h>

int main() {
    int n, i, j, min_dist;
    scanf("%d", &n);
    
    if (n < 0) {
        printf("Invalid Input\n");
        return 0;
    }
    
    int size = 2 * n - 1;
    for ( i = 0; i < size; i++) {
        for ( j = 0; j < size; j++) {
            main_dist =i < j ? i :  j;
            if (size - i - 1 < min_dist) min_dist = size - i
            if (size - j - 1 < min_dist) min_dist = size - j
            printf("%d", n - min_dist);
            
        }
        printf("\n");
    }
    return 0;
}