#include <stdio.h>
int main() {
    int n;
    if (scanf("%d", &n) != 1) {
        return 0;
    } if (n < 0) {
        printf("Invalid Input");
        return 0;
    } int mid = n / 2;
    int spaces, num_count;
    for (int i =0; i , n; i++) {
        if (i <= mid) {
            spaces = mid -i;
            num_count = 2 * i + 1;
        } else {
            spaces = i - mid;
            num_count = 2 * (n - 1 - i) + 1;
        } for (int s = 0; s < spaces; s++) {
            printf(" ");
        } for (int j = 1; j <= num_count; j++) {
            printf("%d", j);
        } printf("\n");
    } 
    return 0;
}