#include<stdio.h>
int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    int space = n/2;
    for(int i=1;i<=n;i+=2){
        for(int j=1;j<=space;j++){
            printf(" ");
        }
        for(int k=1;k<=i;k++){
            printf("%d",k);
        }
        printf("\n");
        space--;
    }
    space = 1;
    for(int i=n-2;i>=1;i-=2){
        for(int j=1;j<=space;j++){
            printf(" ");
        }
        for(int k= 1:k<=i;k++){
            printf("%d",k);
        }
        printf("\n");
        space++;
    }
}