#include<bits/stdc++.h> using namespace std; int n,a[25][25]; int main(){ cin>>n; for(int k=1;k<=n;k++){ for(int i=1;i<=2*n+1;i++)a[i][n+1+k]=a[i][n+1-k]=k; for(int j=1;j<=2*n+1;j++)a[n+1+k][j]=a[n+1-k][j]=k; } for(int i=1;i<=2*n+1;i++){ for(int j=1;j<=2*n+1;j++)cout<<' '<<a[i][j]; cout<<"\n"; } return 0; }