A003218 Weights of threshold functions. (Formerly M0719)

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

Table of n, a(n) for n=2..8.

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

Adjacent sequences: A003215 A003216 A003217 * A003219 A003220 A003221

Keyword

nonn

Author

N. J. A. Sloane

Status

approved