%I A007499 M0598
%S A007499 2,3,4,12,20,55,127,371,1037,3249
%N A007499 Related to hexaflexagrams.
%D A007499 Thomas J. O'Reilly, Classifying and Counting Hexaflexagrams, J. Rec. 
               Math., 8 (1976), 182-187.
%D A007499 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A007499 Sequence in context: A060529 A048073 A002447 this_sequence A117555 A059810 
               A037397
%Y A007499 Adjacent sequences: A007496 A007497 A007498 this_sequence A007500 A007501 
               A007502
%K A007499 nonn
%O A007499 1,1
%A A007499 N. J. A. Sloane (njas(AT)research.att.com), Robert G. Wilson v (rgwv(AT)rgwv.com)