def issyuu(start,nagasa,syokiiti,gyouretu):
#(一周分の動き)start:はじめの値、nagasa:直進の長さ、syokiiti:座標(0,0)で0,(1,1)で1
	for i in range(nagasa):#右方向
		gyouretu[syokiiti][syokiiti + i] = start
		start += 1
	for i in range(nagasa - 1):#下方向
		gyouretu[syokiiti + i + 1][syokiiti + nagasa - 1] = start
		start += 1
	for i in range(nagasa - 1):#左方向
		gyouretu[syokiiti + nagasa - 1][syokiiti + nagasa - 2 - i] = start
		start += 1
	for i in range(nagasa - 2):#上方向
		gyouretu[syokiiti + nagasa - 2 - i][syokiiti] = start
		start += 1
	return gyouretu
N = int(input())
na = N
gy = [[1 for i in range(na)] for j in range(na)]
st = 1
sy = 0
for j in range((N+1)//2):
	issyuu(st,na,sy,gy)
	#以下、二週めの準備
	st += 4*na - 4
	na = na - 2
	sy += 1
#作成した行列を表示する
for k in range(N):
	for l in range(N):
		if len(str(gy[k][l]))==1:
			gy[k][l] = "00"+str(gy[k][l])
		elif len(str(gy[k][l]))==2:
			gy[k][l] = "0"+str(gy[k][l])
		else:
			gy[k][l] = str(gy[k][l])
		print(gy[k][l],end=" ")
	print()