n = int(input()) s = [[0]*n for x in range(n)] c = n/2 if c == int(c): c = int(c) else: c = int(c)+1 for i in range(c): for j in range(i,n-i): for k in range(i,n-i): s[j][k] = i+1 for i in s: for j in i: print(j,end = ' ') print()