# A000108: Catalan numbers In kisungyou/Zseq: Integer Sequence Generator

## Description

Under OEIS A000108, the nth Catalan number is given as

C_n = \frac{(2n)!}{(n+1)!n!}

where the first 6 entries are 1, 1, 2, 5, 14, 42 with n≥ 0.

## Usage

 1 Catalan(n, gmp = TRUE) 

## Arguments

 n the number of first n entries from the sequence. gmp a logical; TRUE to use large number representation, FALSE otherwise.

## Value

a vector of length n containing first entries from the sequence.

## Examples

 1 2 ## generate first 30 Catalan numbers print(Catalan(30)) 

kisungyou/Zseq documentation built on Feb. 4, 2018, 12:02 a.m.