%I #4 Sep 08 2013 13:31:39

%S 1,4,2,5,8,0,3,6,11,14,17,7,10,13,9,12,15,18,21,24,27,30,33,36,39,42,

%T 20,23,26,16,19,22,45,48,51,25,28,31,29,32,35,54,57,60,63,66,69,72,75,

%U 78,81,84,87,90,93,96,99,102,105,108,111,114,117,120,123,126,129

%N Lodumo_3 of Catalan numbers .

%C Permutation of nonnegative integers.

%F a(n)=lod_3(A000108(n)).

%Y Cf. A000108, A039969

%K easy,nonn

%O 0,2

%A _Philippe Deléham_, Apr 28 2009

%E 99 inserted by _R. J. Mathar_, Apr 30 2009