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A001530 NPN-equivalence classes of threshold functions of exactly n variables.
(Formerly M2825 N1138)
1
1, 1, 1, 3, 9, 48, 504, 14188, 1351563 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971, p. 38, Table 2.3.2. - Row 20.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

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=0..8.

Goto, Eiichi, and Hidetosi Takahasi, Some Theorems Useful in Threshold Logic for Enumerating Boolean Functions, in Proceedings International Federation for Information Processing (IFIP) Congress, 1962, pp. 747-752. [Annotated scans of certain pages]

S. Muroga, I. Toda and M. Kondo, Majority decision functions of up to six variables, Math. Comp., 16 (1962), 459-472.

S. Muroga, Threshold Logic and Its Applications, Wiley, NY, 1971 [Annotated scans of a few pages]

S. Muroga, T. Tsuboi and C. R. Baugh, Enumeration of threshold functions of eight variables, IEEE Trans. Computers, 19 (1970), 818-825.

S. Muroga, I. Toda and M. Kondo, Majority decision functions of up to six variables, Math. Comp., 16 (1962), 459-472. [Annotated partially scanned copy]

S. Muroga, T. Tsuboi and C. R. Baugh, Enumeration of threshold functions of eight variables, IEEE Trans. Computers, 19 (1970), 818-825. [Annotated scanned copy]

CROSSREFS

Cf. A001529.

Sequence in context: A183952 A298308 A141051 * A316449 A190009 A012063

Adjacent sequences:  A001527 A001528 A001529 * A001531 A001532 A001533

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 17 18:48 EST 2019. Contains 319251 sequences. (Running on oeis4.)