n = int(input()) s = [] for i in range(1,n+1): s.append([str(x) for x in range(1,i)]+[str(x) for x in range(i,0,-1)]) for i in range(n-1,0,-1): s.append([str(x) for x in range(1,i)]+[str(x) for x in range(i,0,-1)]) for i in s: print((' '.join(i)).center((n-1)*4+1,' '))