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A109455 Number of equivalence classes of threshold functions under permutations of the variables. 0
2, 4, 10, 34, 178, 1720, 590440 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

REFERENCES

D. E. Knuth, The Art of Computer Programming, Vol. 4A, Section 7.1.1, p. 79.

S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971. [Background]

CROSSREFS

Cf. A002078, A000617, A001529.

Sequence in context: A006397 A003422 A117402 * A189591 A189598 A156800

Adjacent sequences:  A109452 A109453 A109454 * A109456 A109457 A109458

KEYWORD

nonn,hard,more

AUTHOR

D. E. Knuth, Aug 17 2005

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.