소스 코드 제출

'''a=input()
for i in range(len(a)):
    if 100<=ord(a[i])<=122:
        print(chr(ord(a[i])-3),end='')
    elif 97<=ord(a[i])<100:
        print(chr(ord(a[i])+23),end='')
    else:
        print(a[i],end='')
y=int(input())
if (y-3)%12==0:
    print('L',(y-4)%10,sep='',end='')
else:
    print(chr((y-3)%12+64),(y-4)%10,sep='',end='')
a,b=input().split("x")
a=int(a)
c,d=map(int,b.split("="))
print(format((d-c)/a,".2f"))

'''

# a = [[2,1,4,5],[8,1,3,3],[2,2]]
# print(len(a))
# print(a[0])
#
# for i in range(len(a)):
#     for j in range(len(a[i])) :
#         print(a[i][j],end=' ')
#     print()

# a=[]
# 이차원 리스트 입력받기
# for i in range(9) :
#     b = list(map(int, input().split()))
#     a.append(b)
#
# print(a)


# a = [0]*100
# a[0] = 10
# print(a)

# a = [[0]*10]*10  (xxxxx불가능)

# a = []
# for i in range(9) :
#     b = [0]*10
#     a.append(b)
# a[0][0]=10
# print(a)
n=int(input())
a=[]
for i in range(n):
    b=[0]*n
    a.append(b)
p=int(0)
q=int(n//2)
for i in range(n*n):
    a[p][q]=i+1
    if (i+1)%n==0:
        if p==n-1:
            p=0
        else:
            p=p+1
    else:
        if p==0:
            p=n-1
        else:
            p=p-1
        if q==n-1:
            q=0
        else:
            q=q+1
for i in range(n):
    for j in range(n):
        print(a[i][j],end=' ')
    print()