- 49

- 0

Here's what I got:

There are 5 ways to make a tower of 4 inches,

There are 6 ways to make a tower of 5 inches,

There are 10 ways to make a tower of 6 inches.

t(1) = 1, t(2) = 2, and t(3) = 4

t(k) = t(k-1) + t(k-2) - 1, k >= 4

Is that right? I would guess there should be a t(k-3) in there somewhere just because they give you three numbers.