#include<stdio.h>

int main(void) {
    int N;
    if (scanf("%d", &N) !=1) return 0;
    
    if (N <= 0) {
        printf("Invalid Input");
        return 0;
    }
    for (int i = N; i >= 1; --i) {
        int spaces = 2 * (N - i);
        for (int s = 0; s < spaces; ++s) putchar(' ');
        
        int count = 2 * i - 1;
        for (int j = 0; j < count; ++j) {
            printf("%d" i);
            if (j < count - 1) putchar(' ');
        }
        putchar('\n');
    }
    for (int i = 2; i <= N; ++i) {
        it spaces = 2 * (N - i);
        for (int s = 0; s < spaces; ++s) putchar(' ');
        
        int count = 2 * i - 1;
        for (int j = 0; j < count; ++j) {
            printf("%d", i);
            if (j < count - 1) putchar(' ');
        }
        putchar('\n');
    }
    return 0;
}