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A002080 Number of self-dual functions of n variables.
(Formerly M1266 N0485)
0
1, 2, 4, 12, 81, 1684, 123565, 33207256, 34448225389 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971, p. 38 and 214.

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).

LINKS

Index entries for sequences related to Boolean functions

CROSSREFS

Sequence in context: A114903 A038054 A003180 * A001206 A144295 A119489

Adjacent sequences:  A002077 A002078 A002079 * A002081 A002082 A002083

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.