#include <stdio.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; i < size; j++) {
            int top = i;
             int left = j;
             int right = size - 1 - j;
             int bottom = size - 1 - i;
             int min = top;
             if (left < min) min = left;
             if (right < min) min = right;
             if (bottom < min) min = bottom;
            printf("%d", n - min);
        }
        printf("\n");
    }
    return 0;
}