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A003218
Weights of threshold functions.
(Formerly M0719)
1
1, 2, 3, 5, 9, 18, 42
OFFSET
2,2
REFERENCES
S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971, p. 268.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Simon Plouffe, Approximations de séries génératrices et quelques conjectures, Dissertation, Université du Québec à Montréal, 1992; arXiv:0911.4975 [math.NT], 2009.
Simon Plouffe, 1031 Generating Functions, Appendix to Thesis, Montreal, 1992.
MAPLE
A003218:=-(1-4*z+2*z**3)/(-1+6*z-9*z**2+3*z**3); # Conjectured by Simon Plouffe in his 1992 dissertation
CROSSREFS
Sequence in context: A320964 A130581 A051236 * A119002 A058770 A049910
KEYWORD
nonn
STATUS
approved