#include<stdio.h>
int main(){
    int n;
    scanf("%d", &n);
    if (n < 0) {
        printf("Invalid Input");
        return 0;
    }
    int size = 2 * n - 1;
    for (int i = 0; i < size; i++){
        for (int j = 0; j < size; j++)
        {
            int top     =i;
            int left    =j;
            int right   =size - 1 - j;
            int bottom  =size - 1 - i;
            int dist_min = top;
            if(left   < dist_min)
dist_min = left;
            if(right  < dist_min)
dist_min = right;
            if(bottom  < dist_min)
dist_min = bottom;
            int val = n - dist_min;
            printf("%d", val);
            cout<<val;
        }
        if (i != size - 1)cout<<'';
        printf(" ");

    }
    return 0;
}