---
title: A Modified Collatz sequence
---
## Problem 277: A Modified Collatz sequence

This is a stub. <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/certifications/coding-interview-prep/project-euler/problem-277-a-modified-collatz-sequence/index.md' target='_blank' rel='nofollow'>Help our community expand it</a>.

<a href='https://github.com/freecodecamp/guides/blob/master/README.md' target='_blank' rel='nofollow'>This quick style guide will help ensure your pull request gets accepted</a>.

<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds  -->