Hailstone number checker is the perfect challenge for any brain!
The challenge is to see whether or not you can discover a sequence that does not get stuck in the never ending repeating pattern of 421421421421....
This simple mathematical treat has plagued university students across America over 20 years ago. At one time, a rumor even spread that spies had started this brain teaser to keep math students from their studies.
Hail Stone Number is a small and friendly tool that lets you test your brain by discovering a sequence discover a sequence that does not get stuck in the never ending repeating pattern.