RosettaCodeData/Task/Catalan-numbers/Icon/catalan-numbers.icon
Ingy döt Net b83f433714 tasks a-s
2013-04-10 23:57:08 -07:00

11 lines
226 B
Text

procedure main(arglist)
every writes(catalan(i)," ")
end
procedure catalan(n) # return catalan(n) or fail
static M
initial M := table()
if n > 0 then
return (n = 1) | \M[n] | ( M[n] := (2*(2*n-1)*catalan(n-1))/(n+1))
end