HP 25 Fibonacci sequence in one program step

[Dave Britten]

(10-13-2021 02:02 PM)Joe Horn Wrote:  Yikes, really? No idea. I would have guessed that it would require 3 steps on a '25. I can't wait to see the solution!

I'll warn you, it's both really stupid, and really clever. I'll post a short write-up later if nobody gets it before then.

The important detail is that it's fair for the program to require the user to set up any or all of the stack/memory/display mode/etc. prior to running the program. But program memory only needs one step plus a GTO 00.