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Collatz Problem

Take any natural number m > 0.
if (n is odd) then n:=3*n+1; else n:=n/2;
until (n==1)

The conjecture has been verified for all numbers up to .


Unsolved Problems in Number Theory. Richard K Guy. Springer, Problem E16.

Elementary Number Theory. Underwood Dudley. 2nd ed.

G.T. Leavens and M. Vermeulen 3x+1 search programs ] Comput. Math. Appl.

vol. 24 n. 11 (1992), 79-99.

Alex Lopez-Ortiz
Mon Feb 23 16:26:48 EST 1998