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Indexed under : Mathematics

Wikenigma - an Encyclopedia of Unknowns Wikenigma - an Encyclopedia of the Unknown

Juggler sequences

Juggler sequences were first proposed by American mathematician and author Clifford A. Pickover. They take the form :

$${\displaystyle a_{k+1}={\begin{cases}\left\lfloor a_{k}^{\frac {1}{2}}\right\rfloor {\mbox{if }}a_{k}{\mbox{ is even}}\\\\\left\lfloor a_{k}^{\frac {3}{2}}\right\rfloor {\mbox{if }}a_{k}{\mbox{ is odd}}.\end{cases}}}$$

It's conjectured that all Juggler Sequences eventually reach 1. The sequences have been verified for initial terms up to 106 - but the conjecture has yet to be proved or disproved.

Technical details Wolfram Mathworld

Also see : Collatz conjectureplugin-autotooltip__plain plugin-autotooltip_bigCollatz conjecture

Using the formula :

$$ {\displaystyle f(n)={\begin{cases}{\frac {n}{2}}\quad\quad\quad{\text{if }}n\equiv 0{\pmod {2}}\\[4px]3n+1\quad{\text{if }}n\equiv 1{\pmod {2}}.\end{cases}}} $$

The Collatz conjecture states that this process will eventually …

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