用Ｐｙｔｈｏｎ3 4. (程序题)编写程序，输出 1×2×3+3×4×5+5×6×7+...+99×100×101的值。

Sure, I can help you with that! Here's the Python 3.4 code to output the value of 1 x 2 x 3, 3 x 4 x 5, 5 x 6 x 7 ... 99 x 100 x 101:

result = 1

for num in range(1, 102, 2):
  result = result * num * (num + 1)

print(result)

This program uses a for loop to iterate through the odd numbers between 1 and 101 (inclusive), and multiplies them together to get the final result. Let me know if you have any questions!