while True: try: n = int(input()) s = n * (n - 1) + 1 b = [n * (n - 1) + 1] for i in range(n - 1): s += 2 b.append(s) print('+'.join(map(str,b))) except: break
while True: try: n = int(input()) s = n * (n - 1) + 1 b = [n * (n - 1) + 1] for i in range(n - 1): s += 2 b.append(s) print('+'.join(map(str,b))) except: break