We went through the Ackermann function before, here, Johan.
http://www.thinbasic.com/community/s...searchid=60624
Maybe it's time to go back to it again, and at least calculate, A(4, 2).
[A(4, 3) = 2^2^65536 - 3.
From within the REPL in DrRacket (using unlimited memory), I tried to execute,
(define a (- (expt 2 (expt 2 65536)) 3)),
and, DrRacket crashed.]
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