#include <bits/stdc++.h>
using namespace std;

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

using ll = long long;
using P = pair<ll,ll>;
using graph = vector<vector<int>>;

const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
const ll INF = 1LL<<60;
const ll mod = 1000000007LL;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main(){
  int N;
  cin>>N;
  vector<int> v(N);
  rep(i,N){
    rep(j,N){
      int ans = (i+j)%N;
      if(ans%2==0) cout<<ans/2+1<<" ";
      else cout<<(ans+N)/2+1<<" ";
    }
    cout<<endl;
  }
}