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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit cb5bb5e222
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Task/Catalan-numbers/Racket/catalan-numbers.rkt Normal file
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#lang racket
(require planet2)
; (install "this-and-that") ; uncomment to install
(require memoize/memo)
(define/memo* (catalan m)
(if (= m 0)
1
(for/sum ([i m])
(* (catalan i) (catalan (- m i 1))))))
(map catalan (range 1 15))