http://www.arsmathematica.net/archives/2005/06/13/catalan-numbers/ Dedicated to the mathematical arts. Tue, 06 Jan 2009 18:26:14 +0000 http://wordpress.org/?v=2.5.1 http://www.arsmathematica.net/archives/2005/06/13/catalan-numbers/#comment-32 sigfpe Tue, 14 Jun 2005 14:42:05 +0000 http://www.arsmathematica.net/?p=55#comment-32 <a href="http://www-math.mit.edu/~rstan/ec/" rel="nofollow">Stanley</a> has lots of material in Enumerative Combinatorics II with plenty of extra material online. For example he has many more interpretations of the Catalan numbers <a href="http://www-math.mit.edu/~rstan/ec/catadd.pdf" rel="nofollow">here</a>. Stanley has lots of material in Enumerative Combinatorics II with plenty of extra material online. For example he has many more interpretations of the Catalan numbers here.

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