/**
*    author:  boutarou
*    created: 14.08.2020 21:25:02
**/

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < int(n); i++)
using ll = long long;
using P = pair<int, int>;

int main() {
    int n;
    cin >> n;
    vector<vector<int>> ans(n, vector<int>(n));
    int now = 0;
    rep(i,n) {
        int res = now;
        rep(j,n) {
            ans[i][res] = j + 1;
            res--;
            if (res < 0) res += n;
        }
        now += 2;
        if (now >= n) now -= n;
    }
    rep(i,n) {
        rep(j,n) {
            cout << ans[i][j] << " ";
        }
        cout << endl;
    }
    return 0;
}