package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

func configure(scanner *bufio.Scanner) {
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 1000005), 1000005)
}
func getNextString(scanner *bufio.Scanner) string {
	scanned := scanner.Scan()
	if !scanned {
		panic("scan failed")
	}
	return scanner.Text()
}
func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}
func getNextInt64(scanner *bufio.Scanner) int64 {
	i, _ := strconv.ParseInt(getNextString(scanner), 10, 64)
	return i
}
func getNextFloat64(scanner *bufio.Scanner) float64 {
	i, _ := strconv.ParseFloat(getNextString(scanner), 64)
	return i
}
func main() {
	fp := os.Stdin
	wfp := os.Stdout
	extra := 0
	if os.Getenv("I") == "IronMan" {
		fp, _ = os.Open(os.Getenv("END_GAME"))
		extra = 100
	}
	scanner := bufio.NewScanner(fp)
	configure(scanner)
	writer := bufio.NewWriter(wfp)
	defer func() {
		r := recover()
		if r != nil {
			fmt.Fprintln(writer, r)
		}
		writer.Flush()
	}()
	solve(scanner, writer)
	for i := 0; i < extra; i++ {
		fmt.Fprintln(writer, "-----------------------------------")
		solve(scanner, writer)
	}
}
func solve(scanner *bufio.Scanner, writer *bufio.Writer) {
	n := getNextInt(scanner)
	dy := [4]int{0, 1, 0, -1}
	dx := [4]int{1, 0, -1, 0}
	ans := makeGrid(n, n)
	y := 0
	x := -1
	d := 0
	for i := 0; i < n*n; i++ {
		for yy, xx := y+dy[d], x+dx[d]; i < n*n && (!valid(yy, n) || !valid(xx, n) || ans[yy][xx] != 0); yy, xx = y+dy[d], x+dx[d] {
			d = (d + 1) % 4
		}
		y += dy[d]
		x += dx[d]
		ans[y][x] = i + 1
	}
	for i := 0; i < n; i++ {
		fmt.Fprintf(writer, "%03d", ans[i][0])
		for j := 1; j < n; j++ {
			fmt.Fprintf(writer, " %03d", ans[i][j])
		}
		fmt.Fprintln(writer, "")
	}
}
func valid(x, n int) bool {
	return 0 <= x && x < n
}
func makeGrid(h, w int) [][]int {
	index := make([][]int, h, h)
	data := make([]int, h*w, h*w)
	for i := 0; i < h; i++ {
		index[i] = data[i*w : (i+1)*w]
	}
	return index
}