klaufir

; SBCL 1.1.12, limit = 10M, 20M, 40M
; 22:37 <fikusz> result: 3.7037042592681206d19
; 22:37 <fikusz> ./lispeval.exe  0.44s user 0.01s system 99% cpu 0.456 total
; 22:38 <fikusz> result: 2.9629631851909926d20
; 22:38 <fikusz> ./lispeval.exe  0.85s user 0.01s system 99% cpu 0.867 total
; 22:38 <fikusz> result: 2.3703704592622897d21
; 22:38 <fikusz> ./lispeval.exe  1.64s user 0.02s system 99% cpu 1.672 total


(defun main-fn ()