#include <stdio.h>

void solve(int t){
  int a, i, j , k, n;
  int matrix[101][101];
  a=0;
  if (!(t%2))
    n = t/2;
  else
    n = t/2 + 1;
  for (k = 0; k<n; ++k){
    for (i = a; i < t-a; ++i){
      for (j = a; j < t-a; ++j){
	matrix[i][j]=a+1;
      }
    }
    ++a;
  }

  
  for (i = 0; i < t; ++i){
    for (j = 0; j < t; ++j){
      printf("%d ", matrix[i][j]);
    }
    printf("\n");
  }
  printf("\n");
}


int main(){

  int t;
  do{
    scanf("%d", &t);
    solve(t);
  }while(t!=0);
  
  return 0;
}