Spiral

def down(i,j,N):
    #print('d i={} j={} N={}'.format(i,j,N))
    if N == 0:
        return
    global new
    global n
    global f
    for k in range(N-1):
        #print('ffgfg {} {}'.format(i,j))
        new[j][i] = n[f]
        j = j + 1
        f = f + 1
        #print('{} {} {}'.format(i,j,f))
    #print(new,f)
    j = j - 1
    i = i - 1
    #print(i,j)
    #print(new[j][i])
    for k in range(N-1):
        new[j][i] = n[f]
        i = i - 1
        f = f + 1
    #print(new)
    i = i + 1
    up(i,j-1,N-1)
    return


def up(i,j,N):
    #print('u i={} j={} N={}'.format(i,j,N))
    if N == 0:
        return
    global new
    global n
    global f
    for k in range(N-1):
        #print('ffgfg {} {}'.format(i,j))
        new[j][i] = n[f]
        j = j - 1
        f = f + 1
        #print('{} {} {}'.format(i,j,f))
    #print(new,f)
    j = j + 1
    i = i + 1
    #print(i,j)
    #print(new[j][i])
    for k in range(N-1):
        new[j][i] = n[f]
        i = i + 1
        f = f + 1
    #print(new)
    i = i - 1
    down(i,j+1,N-1)
    return
f = 0
a = int(input())
n = [i+1 for i in range(a*a)]
new = [[int(i) for i in range(a)] for i in range(a)]
for i in range(a):
    new[0][i] = n[i]
    f = f + 1
down(a-1,1,a)
for i in range(len(new)):
    for j in range(len(new[i])):
        print(new[i][j],end=' ')
    print('')