#include<stdio.h>

void printpattern(int n){
    if (n< 0){
        printf("Invalid Input\n");
        return;
    }
    
    for (int i =0; i , 2 * n-1;i++) {
        for (int j=0; j<2 *n-1; j++){
            int minDist = (i < n) ? i: 2*n-2-i;
            minDist = (minDist < j) ? minDist : j;
            minDist = (minDist < 2 * n - 2 - j) ? minDist : 2*n - 2 - j;
            printf("%d",n-minDist);
        }
        printf("\n");
    }
}

int main(){
    int n;
    scanf("%d",&n);
    printpattern(n);
    return 0;
}