n=int(input()) a=[[0]*n for x in range(n)] nums=[(i,n-1-i) for i in range(n//2+1)] if n%2 else [(i,n-1-i) for i in range(n//2)] for i in range(n): for j in range(n): for t,ij in enumerate(nums): if i==ij[0] or i==ij[1] or j==ij[0] or j==ij[1]: a[i][j]=t+1 break for row in a: print(*row)