// editor1
#include<stdio.h>
int main () {
    int N;
    scanf("%d", &N);
    if (N <= 0 ) {
        printf("Invalid input");
        return 0;
    }
    int totalWidth = 2 * N-1;
    for (int i = N; i >= 1; i--) {
        int count = 2*i-1;
        int spaces = (totalWidth - count) / 2;
        for (int m = 0; m < spaces; m++) 
        printf(" "); 
        for (int j = 0; j < 2*i-1; j++) 
        printf("%d", i); 
        if ( j < count - 1)
        printf(" ");
    }
        printf("\n");
    }
    for (int i = 2;i<=N;i++) {
        int count = 2*i-1;
        int spaces = (totalWidth - count)/2;
        for ( int m = 0; m < spaces;m++)
        printf(" ");
        for (int j=0; j <count; j++) {
        printf("%d ",i);
        if (j < count - 1)
        printf(" ");
        }
        printf("\n");
    }
    return 0;
    }