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Collatz Sequence Calculator

Generate the Collatz sequence for any starting number

Collatz Sequence Calculator

Starting Number (positive integer ≤ 1,000,000)

The Collatz conjecture states that for any positive integer, repeatedly applying the rule: if even divide by 2, if odd multiply by 3 and add 1 — will always eventually reach 1. It remains one of mathematics' most famous unsolved problems.

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