package main

import (
	"fmt"
)

func main() {
	var N int
	fmt.Scan(&N)
	z := make([][]int, N)
	for i := 0; i < N; i++ {
		z[i] = make([]int, N)
	}
	if N%2 == 1 {
		row := 0
		col := N / 2
		for i := 0; i < N*N; i++ {
			z[row][col] = i + 1
			nrow := (row + N - 1) % N
			ncol := (col + 1) % N
			if z[nrow][ncol] != 0 {
				nrow = (row + 1) % N
				ncol = col
			}
			row = nrow
			col = ncol

		}
	} else {
		var row, col int
		row = N - 1
		col = N / 2
		z[row][col] = 1
		for i := 2; i <= N*N; i++ {
			if z[(row+1)%N][(col+1)%N] == 0 {
				row = (row + 1) % N
				col = (col + 1) % N
			} else {
				row = (row - 1 + N) % N
			}
			z[row][col] = i
		}
	}
	for i := 0; i < N; i++ {
		for j := 0; j < N; j++ {
			fmt.Print(z[i][j], " ")
		}
		fmt.Println("")
	}
}