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Vermiculus

Gregory-Leibniz

Vermiculus
Mar 30th, 2012
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Lisp 0.09 KB | None | 0 0
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  1. (defun lib(n) (if (= n 1) 4 (+ (lib (- n 1)) (/ (* 4 (expt -1 (+ n 1))) (- (* 2 n) 1)))))
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