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HP Forums / HP Calculators (and very old HP Computers) / General Forum v / HP 25 Fibonacci sequence in one program step

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HP 25 Fibonacci sequence in one program step
10-13-2021, 01:03 PM
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Dave Britten Offline
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HP 25 Fibonacci sequence in one program step
I've been reading "Mathematical Recreations for the Programmable Calculator", and they have a somewhat humorous puzzle regarding the shortest possible program to produce the Fibonacci sequence.

The HP 25 program they concocted is only a single step, plus the typical GTO 00 to halt and reset the program. This short program does require the user to preload the stack and/or memory prior to running, but then subsequent presses of R/S produce the Fibonacci sequence on the display.

I'm curious if anybody can figure out the silly trick that they used in this book. Smile
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HP 25 Fibonacci sequence in one program step - Dave Britten - 10-13-2021 01:03 PM



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