RosettaCodeData/Task/Fibonacci-sequence/XLISP/fibonacci-sequence-1.xlisp
2016-12-05 23:44:36 +01:00

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85 B
Text

(DEFUN FIBONACCI (N)
(FLOOR (+ (/ (EXPT (/ (+ (SQRT 5) 1) 2) N) (SQRT 5)) 0.5)))