12 lines
240 B
Text
12 lines
240 B
Text
procedure main()
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every writes(catalan(0 to 14)," ")
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end
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procedure catalan(n) # return catalan(n) or fail
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static M
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initial M := table()
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n=0 & return 1
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if n > 0 then
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return (n = 1) | \M[n] | ( M[n] := (2*(2*n-1)*catalan(n-1))/(n+1))
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end
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