#include <iostream>
#include <fstream>
#include <cstdio>
#include <cmath>
#include <vector>
#include <string>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <bitset>
#include <algorithm>
#include <complex>
#include <array>
using namespace std;
 
#define REP(i,n) for(int i=0; i<n; ++i)
#define FOR(i,a,b) for(int i=a; i<=b; ++i)
#define FORR(i,a,b) for (int i=a; i>=b; --i)
#define ALL(c) (c).begin(), (c).end()
 
typedef long long ll;
typedef vector<int> VI;
typedef vector<ll> VL;
typedef vector<VI> VVI;
typedef vector<VL> VVL;
typedef pair<int,int> P;
typedef pair<ll,ll> PL;
typedef vector<double> VD;
typedef vector<VD> VVD;

template<typename T> void chmin(T &a, T b) { if (a > b) a = b; }
template<typename T> void chmax(T &a, T b) { if (a < b) a = b; }

int in() { int x; scanf("%d", &x); return x; }
ll lin() { ll x; scanf("%lld", &x); return x; }

int main() {
    int n;
    cin >> n;

    VVI a(n, VI(n));
    int c = 1, m = (n + 1) / 2;

    if (n % 2){
        REP(i,m){
            REP(j,i+1){
                a[m - 1 + j][m - 1 + i - j] = c++;
                a[j][i - j] = c++;
            }
        }
        REP(i,m-1){
            REP(j,m-1-i){
                a[m + i + j][n - 1 - j] = c++;
                if (c < 2 * m * m) a[i + j + 1][m - 1 - j] = c++;
            }
        }
        REP(i,m-1){
            REP(j,m-1){
                a[i][m+j] = c++;
                a[m+i][j] = c++;
            }
        }
    }else{
        REP(i,m){
            REP(j,m){
                a[i][j] = c++;
                a[m+i][m+j] = c++;
            }
        }
        REP(i,m){
            REP(j,m){
                a[i][n-1-j] = c++;
                a[m+i][m-1-j] = c++;
            }
        }
    }

    REP(i,n){
        REP(j,n) cout << a[i][j] << " ";
        // REP(j,n) printf("%02d ", a[i][j]);
        cout << endl;
    }

    return 0;
}