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  1. en.wikipedia.org › wiki › CatalanCatalan - Wikipedia

    Catalan wine, an alternative name used in France for wine made from the Carignan grape Carignan, a wine grape that is also known as Catalan; Sports and games. Catalan Opening, in chess; Catalan Open, golf tournament; Catalans Dragons, a rugby league team often known simply as Catalan; XIII Catalan, a rugby league team from Perpignan, France

  2. The Catalan sequence was described in the 18th century by Leonhard Euler, who was interested in the number of different ways of dividing a polygon into triangles. The sequence is named after Eugène Charles Catalan , who discovered the connection to parenthesized expressions during his exploration of the Towers of Hanoi puzzle.

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