#include<stdio.h>
#include<stdlib.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 minDisr =top;
            if(left < minDist) minDist = left;
            if(bottom < minDist) minDist = bottom;
            if(right < minDist) minDist = right
            printf("%d", n - minDist);
        }
        printf("\n");
    }
    return 0;
}