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