#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 bottom=size - 1 - i;
            int right=size - 1 - j;
            int mim=top;
            if (left<min)min=left;
            if (bottom<min)min=bottom;
            if (right<min)min=right;
            printf("%d", n - min);
        }
        printf("\n");
    }
    return 0;
}