%I M1104 #13 Sep 05 2018 05:49:23
%S 2,4,8,15,28,50,90,156
%N Essentially a duplicate of A006727.
%C In the 1995 Encyclopedia of Integer Sequences this sequence appears twice, as both M1104 and M1105.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%K dead
%O 1,1