3. The fox builds "pyramids" from 5 cubes in the following way: each "pyramid" consists of one or several levels; on each level, the number of cubes is strictly less than on the previous one; each new level consists of one or several consecutive cubes. You can see an example of a "pyramid" made of ten cubes in the picture:
![](https://cdn.mathpix.com/cropped/2024_05_06_d59521f9eee01ea62528g-3.jpg?height=214&width=870&top_left_y=244&top_left_x=206)

How many different "pyramids" can the fox build?

(It is important where the right edge and the left edge of the "pyramid" are — the "pyramids" in the picture are different).
Answer: 7

## Examples of answer notation:

12

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