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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Catalan-numbers/Maxima/catalan-numbers.maxima Normal file
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/* The following is an array function, hence the square brackets. It uses memoization automatically */
cata[n] := sum(cata[i]*cata[n - 1 - i], i, 0, n - 1)$
cata[0]: 1$
cata2(n) := binomial(2*n, n)/(n + 1)$
makelist(cata[n], n, 0, 14);
makelist(cata2(n), n, 0, 14);
/* both return [1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012, 742900, 2674440] */