Search: id:A003218
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%I A003218 M0719
%S A003218 1,2,3,5,9,18,42
%N A003218 Weights of threshold functions.
%D A003218 S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971, p. 
               268.
%D A003218 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A003218 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 A003218 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.
%p A003218 A003218:=-(1-4*z+2*z**3)/(-1+6*z-9*z**2+3*z**3); [Conjectured by S. Plouffe 
               in his 1992 dissertation.]
%Y A003218 Sequence in context: A099236 A130581 A051236 this_sequence A058770 A049910 
               A077643
%Y A003218 Adjacent sequences: A003215 A003216 A003217 this_sequence A003219 A003220 
               A003221
%K A003218 nonn
%O A003218 2,2
%A A003218 N. J. A. Sloane (njas(AT)research.att.com).

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