%I #2 Mar 31 2012 13:21:10
%S 1111,11110,111100,1111000,11110000,111100000,1111000000,11110000000,
%T 111100000000,111100001111,1111000000000,1111000001111,1111000011110,
%U 1111000011111,1111100001111,11110000000000,11110000001111
%N Sequence A115811 in binary.
%Y Cf. a(n) = A007088(A115811(n)).
%K nonn,base
%O 1,1
%A _Antti Karttunen_, Feb 01 2006