RosettaCodeData/Task/Catalan-numbers/Sidef/catalan-numbers-2.sidef
2017-09-25 22:28:19 +02:00

3 lines
74 B
Text

func c(n) is cached {
n == 0 ? 1 : (c(n-1) * (4 * n - 2) / (n + 1))
}