Problem 3002. Not square-free number sequence

Not square-free numbers are all positive integers divisible by a square greater than one: 4, 8, 9, 12, 16, 18, 20, 24, 25, 27, ... For example, 4 = 2^2, 8 = 2^2 * 2, 9 = 3^2, 12 = 2^2 * 3, etc.
Return numbers from the square-free sequence corresponding to the supplied indices. For example, if n = 3:7, your function should return [9, 12, 16, 18, 20].
This problem is related to Problem 3001 and Problem 3003.
Solve

Solution Stats

53.21% Correct | 46.79% Incorrect
Last Solution submitted on Jan 13, 2026

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers75

Suggested Problems

More from this Author139

Community Treasure Hunt

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

Start Hunting!