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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int N; cin >> N;
    vector<vector<int>> A(N,vector<int>(N));

    int a = 1;
    for(int p=0; p<N/2; p++){
        int l = p,r = N-1-p;
        vector<pair<int,int>> one,two;
        int memo = a++;

        for(int k=r; k>=l; k--) one.push_back({r,k});
        for(int i=r-1; i>l; i--) one.push_back({i,l});
        for(int i=r-1; i>=l; i--) two.push_back({i,r});
        for(int k=r-1; k>l; k--) two.push_back({l,k});
        two.push_back({p,p});

        int n = one.size();
        for(int i=0; i<n; i+=2){
            auto [x,y] = one.at(i);
            A.at(x).at(y) = a++;
            tie(x,y) = one.at(i+1);
            A.at(x).at(y) = a++;
            tie(x,y) = two.at(i);
            A.at(x).at(y) = a++;
            tie(x,y) = two.at(i+1);
            A.at(x).at(y) = a++;
        }

        A.at(p).at(p) = memo; a--;
    }
    if(N%2) A.at(N/2).at(N/2) = a;

    for(int i=0; i<N; i++) for(int k=0; k<N; k++) cout << A.at(i).at(k) << (k==N-1?"\n":" ");
}