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%I #6 Jun 26 2013 05:42:18
%S 4,2,2,2,2,2,2,1,2,2,2,1,2,2,1,2,2,2,1,2,2,1,2,2,2,1,2,2,1,2,2,1,2,2,
%T 2,1,2,2,1,2,2,1,2,2,1,2,2,1,2,2,1,2,2,2,1,2,2,1,2,2,1,2,2,1,2,2,1,2,
%U 2,1,2,2,1,2,2,1,2,2,1,2,2,1,2,2,2,1,2,2,1,2,2,1,2,2,1,2,2,1,2,2,1,2,2,1,2
%N a(n)= number of Catalan numbers with n digits.
%H J. Mulder, <a href="/A137239/b137239.txt">Table of n, a(n) for n = 1..12034</a>
%e 1-digit Catalan numbers are 1,1,2,5 so a(1)=4
%e 2-digits Catalan numbers are 14,24 so a(2)=2
%Y Cf. A000108.
%K nonn,base,easy
%O 1,1
%A _Ctibor O. Zizka_, Mar 09 2008
%E Corrected and extended by _Sean A. Irvine_, Feb 07 2010