Catalan numbers: Difference between revisions

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 =={{header|Perl 6}}==
-<lang perl6>my @catalan := 1, { (state $n)++; 2*(2*$n-1)/($n+1) * $_ } ... *;
+<lang perl6>constant Catalan = 1, [\*] (2, 6 ... *) Z/ 2 .. *;
-.say for @catalan[^15];</lang>
+.say for Catalan[^15];</lang>
 {{out}}
 <pre>1