Cody

Problem 53130. Easy Sequences 55: "Ugly" Rectangles?

A positive integer n is called a regular number, if and only if there exist a non-negative integer k, such that . For some reason, such a number is also refered to as an ugly number. Below are the first few regular numbers:
We say that an integer-sided rectangle is a "regular" rectangle if its area is a regular number. In the figure below, the red-colored rectanges are regular, while the blue ones are not.
All regular rectangles whose areas are less than equal to are listed below:
And their total area is:
For a given area limit a, find the total area of all regular rectangles with areas less than equal a.
Solve

Solution Stats

66.67% Correct | 33.33% Incorrect
Last Solution submitted on Jul 02, 2023

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers4

Suggested Problems

More from this Author116

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!