Leavens, Gary T. and Vermeulen, Mike (1992) 3x + 1 Search Programs. Technical Report TR92-01, Department of Computer Science, Iowa State University.
3x+1 Search Programs
Gary T. Leavens and Mike Vermeulen
Algorithms for computing peaks of certain statistics related to the
3x+1 problem are described, along with data on such peaks up to 56
trillion (5.6 times 10 to the 13th power). The data result from
several years of computation. The design of the algorithms used
illustrates several techniques for program optimization.
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