#include "bits/stdc++.h"
using namespace std;
#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))
#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))
#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))
static const int INF = 0x3f3f3f3f; static const long long INFL = 0x3f3f3f3f3f3f3f3fLL;
typedef vector<int> vi; typedef pair<int, int> pii; typedef vector<pair<int, int> > vpii; typedef long long ll;
template<typename T, typename U> static void amin(T &x, U y) { if(y < x) x = y; }
template<typename T, typename U> static void amax(T &x, U y) { if(x < y) x = y; }

int main() {
	int N;
	while(~scanf("%d", &N)) {
		vector<vi> A(N, vi(N));
		static const int dy[4] = { 0, 1, 0, -1 }, dx[4] = { 1, 0, -1, 0 };
		int d = 0, y = 0, x = 0;
		rep(k, N * N) {
			A[y][x] = k + 1;
			if(k<N*N-1) while(1) {
				int yy = y + dy[d], xx = x + dx[d];
				bool ok =
					!(yy < 0 || yy >= N || xx < 0 || xx >= N) &&
					(A[yy][xx] == 0);
				if(ok) {
					y = yy, x = xx;
					break;
				}
				(++ d) %= 4;
			}
		}
		rep(i, N) {
			rep(j, N) {
				if(j != 0) putchar(' ');
				printf("%03d", A[i][j]);
			}
			puts("");
		}
	}
	return 0;
}