n=int(input())
m=[[0 for i in range(n+2)] for i in range(n+2)]

for i in range(n+2):
    m[0][i], m[i][0], m[n+1][i], m[i][n+1]=-1,-1,-1,-1

ii,jj=1,1
k=1

vec="migi"
for i in range(n**2):
    s=0
    m[ii][jj]=k
    while s==0:
        if vec=="migi":
            if m[ii][jj+1]==0:
                jj+=1
                s=1
            else:
                vec="shita"

        elif vec=="shita":
            if m[ii+1][jj]==0:
                ii+=1
                s=1
            else:
                vec="hidari"

        elif vec=="hidari":
            if m[ii][jj-1]==0:
                jj-=1
                s=1
            else:
                vec="ue"

        elif vec=="ue":
            if m[ii-1][jj]==0:
                ii-=1
                s=1
            else:
                vec="migi"

        if k==n**2:
            break

    k=k+1

ans=[[0 for i in range(n)] for i in range(n)]
for i in range(n):
    for j in range(n):
        ans[i][j]=str(m[i+1][j+1]).zfill(3)

for i in range(n):
    print(" ".join(map(str, ans[i])))