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bn:01450314n
Noun Concept
Categories: Articles containing proofs, Enumerative combinatorics, Integer sequences, Factorial and binomial topics, All Wikipedia articles written in American English
EN
Catalan number  Catalan's problem  Catalan numbers  Catalan sequence  Catalan series
EN
In combinatorial mathematics, the Catalan numbers are a sequence of natural numbers that occur in various counting problems, often involving recursively defined objects. Wikipedia
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EN
In combinatorial mathematics, the Catalan numbers are a sequence of natural numbers that occur in various counting problems, often involving recursively defined objects. Wikipedia
Recursive integer sequence Wikidata
In combinatorial mathematics, any of a sequence of natural numbers that occur in various counting problems, often involving recursively defined objects; the nth Catalan number is equal to (2n choose n) over (n+1). Wiktionary
EN
Cn — the n th Catalan number — could be described as the number of distinct ways in which a sequence of n + 1 numbers could be associated by means of some specified binary operator. Wiktionary
NAMED AFTER
Eugène Charles Catalan
Wikipedia
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Catalan number
Wikidata
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Catalan number
Wiktionary
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Catalan number
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EN
Catalan's problem, Catalan numbers, Catalan sequence, Catalan series, Dyck path, Quadruple factorial, Segner number, Segner numbers

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