%I #2 Mar 30 2012 17:34:00
%S 0,0,0,6,0,6,0,12,6
%N First differences of A161418.
%Y Cf. A160120, A161418, A161829, A161837.
%K more,nonn
%O 1,4
%A _Omar E. Pol_, Jun 21 2009
