#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define endl '\n'
#define vec vector<ll>
#define mat vector<vector<ll> >
#define fi first
#define se second
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll> pll;
typedef long double ld;
typedef complex<double> comp;
const ll inf=1e9+7;
const ll mod=2e5+3;
const int MAX=1000010;
signed main(){
    ll n;cin>>n;
    map<ll,ll>ma;
    REP(i,1,n+1){
        ma[i+i]=i;
    }
    REP(i,1,n+1){
        REP(j,1,n+1){
            if((i+j)%2==0)cout<<ma[i+j]<<' ';
            else{
                if((n+1)<i+j){
                    cout<<ma[i+j-n]<<' ';
                }else{
                    cout<<ma[2*n+1-(n+1-i-j)]<<' ';
                }
            }
        }
        cout<<endl;
    }
}