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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; internal format)
OFFSET

0,4

REFERENCES

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

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

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

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).

CROSSREFS

Cf. A001529.

Sequence in context: A105458 A183952 A141051 * A190009 A012063 A036751

Adjacent sequences:  A001527 A001528 A001529 * A001531 A001532 A001533

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 20:50 EST 2012. Contains 206085 sequences.