int main() {

int n;
scanf("%d", &n);
// Complete the code to print the pattern.

  int length,begin, end; 
  length= n*2-1;
  begin =0;
  end = length-1;

  int array[length][length];


  while(n!=0){
      for(int i = begin; i<=end; i++){
          for(int j = end; j>=begin; j--){
              if(i==begin||i==end ||j==begin||j==end) {
                  array[i][j] = n;
              }
          }

      }
      begin++;
          end--;
          n--;
  }

  for(int i = 0; i<length; i++){
          for(int j = 0; j<length; j++){
              printf("%d ", array[i][j]);
          }

          printf("\n");
  }



return 0;

}