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