Collatz Conjecture

Euler #14: Longest Collatz Sequence

Proving the Collatz Conjecture is still an unsolved problem of mathematics. This post doesn’t try to do that. Instead, it descends down the tree of a million numbers to the root of all numbers: 1.

Visualizing Collatz

Drawing Collatz trees of numbers arranged in concentric doubling rings reveals an onion. Will it cause tears of misery or joy?