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%I M2825 N1138 #24 Feb 01 2022 23:45:00
%S 1,1,1,3,9,48,504,14188,1351563
%N NPN-equivalence classes of threshold functions of exactly n variables.
%D S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971, p. 38, Table 2.3.2. - Row 20.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H Goto, Eiichi, and Hidetosi Takahasi, <a href="/A000371/a000371_1.pdf">Some Theorems Useful in Threshold Logic for Enumerating Boolean Functions</a>, in Proceedings International Federation for Information Processing (IFIP) Congress, 1962, pp. 747-752. [Annotated scans of certain pages]
%H S. Muroga, I. Toda and M. Kondo, <a href="https://doi.org/10.1090/S0025-5718-62-99195-0">Majority decision functions of up to six variables</a>, Math. Comp., 16 (1962), 459-472.
%H S. Muroga, <a href="/A000371/a000371.pdf">Threshold Logic and Its Applications</a>, Wiley, NY, 1971 [Annotated scans of a few pages]
%H S. Muroga, T. Tsuboi and C. R. Baugh, <a href="https://doi.org/10.1109/T-C.1970.223046">Enumeration of threshold functions of eight variables</a>, IEEE Trans. Computers, 19 (1970), 818-825.
%H S. Muroga, I. Toda and M. Kondo, <a href="/A001528/a001528.pdf">Majority decision functions of up to six variables</a>, Math. Comp., 16 (1962), 459-472. [Annotated partially scanned copy]
%H S. Muroga, T. Tsuboi and C. R. Baugh, <a href="/A002077/a002077.pdf">Enumeration of threshold functions of eight variables</a>, IEEE Trans. Computers, 19 (1970), 818-825. [Annotated scanned copy]
%Y Cf. A001529.
%K nonn,more
%O 0,4
%A _N. J. A. Sloane_
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