%I A006485 M2912
%S A006485 3,11,171,43691,2863311531,12297829382473034411,
%T A006485 226854911280625642308916404954512140971
%N A006485 (2^(2^n + 1) + 1)/3.
%D A006485 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%t A006485 lst={};Do[AppendTo[lst, (2^(2^n+1)+1)/3], {n, 9}];lst [From Vladimir 
               Orlovsky (4vladimir(AT)gmail.com), Sep 19 2008]
%Y A006485 Sequence in context: A080987 A132561 A140538 this_sequence A003115 A053888 
               A118479
%Y A006485 Adjacent sequences: A006482 A006483 A006484 this_sequence A006486 A006487 
               A006488
%K A006485 nonn
%O A006485 1,1
%A A006485 Dennis S. Kluk (mathemagician(AT)ameritech.net)