Question

Suppose I have a red block (R) of height 1, a blue block (B) of height 2, and a green block (G) of height 3. I can stack the blocks one above the other to build a tower. For example, I can stack in the order RBG and I would get a tower of height 6. I wish to compute how many different towers of a given height n can be built if there are ample blocks of each colour

Answer 1

Explanation:

If a tower is to be constructed with blue and red blocks, and red blocks cannot touch each other, what would the formula be to find all possible combinations ...