%I A005310 M0359
%S A005310 2,2,6,14,30,62,126,246,472
%N A005310 Fermionic string states.
%C A005310 See the reference for precise definition.
%C A005310 The g.f. 2*(1-2*z+2*z**2)/(-1+2*z)/(z-1) conjectured by S. Plouffe in 
               his 1992 dissertation is unlikely to be correct.
%D A005310 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A005310 T. Curtright, ``Counting symmetry patterns in the spectra of strings,
               '' in H. J. de Vega and N. S\'{a}nchez, editors, String Theory, Quantum 
               Cosmology and Quantum Gravity. Integrable and Conformal Invariant 
               Theories. World Scientific, Singapore, 1987, pp. 304-333.
%H A005310 S. Plouffe, <a href="http://www.lacim.uqam.ca/%7Eplouffe/articles/MasterThesis.pdf">
               Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures</
               a>, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 
               1992.
%H A005310 S. Plouffe, <a href="http://www.lacim.uqam.ca/%7Eplouffe/articles/FonctionsGeneratrices.pdf">
               1031 Generating Functions and Conjectures</a>, Universit\'{e} du 
               Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
%Y A005310 Sequence in context: A019101 A051890 A071109 this_sequence A002203 A097341 
               A142710
%Y A005310 Adjacent sequences: A005307 A005308 A005309 this_sequence A005311 A005312 
               A005313
%K A005310 nonn
%O A005310 0,1
%A A005310 N. J. A. Sloane (njas(AT)research.att.com).