English Explanatory Dictionary

Catalan number

English dictionary entry

Meanings

noun
  1. 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).

Word forms

Catalan number Catalan numbers

Etymology

Named after the Belgian mathematician Eugène Catalan (1814–1894).

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