CatalanNumber

CatalanNumber[n] gives the nth Catalan number Cn.

Examples

CatalanNumber[5]
(* 42 *)

Table[CatalanNumber[n], {n, 0, 10}]
(* {1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796} *)

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