#include<bits/stdc++.h>
using namespace std;
int a[110][110];
int main(){
    int n,ai,aj;
    cin>>n;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            ai=i<=(n+1)/2?i:n+1-i;
            aj=j<=(n+1)/2?j:n+1-j;
            cout<<(ai<aj?ai:aj)<<" ";
        }
        cout<<endl;
    }
    return 0;
}