%I #3 Mar 30 2012 16:50:10
%S 2,2,4,16,28,56,108,216,424,848,1684,3368,6712,13424,26808,53616,
%T 107152,214304,428460,856920,1713544,3427088
%N Leading column of A102416.
%K nonn
%O 0,1
%A _N. J. A. Sloane_, Mar 17 2005
