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A000845 Number of switching networks (see Harrison reference for precise definition).
(Formerly M4570 N1947)
0
8, 106, 49008, 91901007752, 2579044825238020792325632, 17027728231845024377254356563216673341241082335920128, 7634627316699699128123263912340182782717075954250211317249456247129155629314608610294934410743206996562935808 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Number of equivalence classes with permutation and complementation of n variables on the domain and complementation of 3 variables on the range. [Sean A. Irvine, Aug 07 2011]

REFERENCES

M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327.

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=1..7.

Index entries for sequences related to switching networks

CROSSREFS

Sequence in context: A112701 A099695 A236953 * A199658 A027013 A239985

Adjacent sequences:  A000842 A000843 A000844 * A000846 A000847 A000848

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Aug 07 2011

STATUS

approved

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Last modified July 29 09:41 EDT 2021. Contains 346344 sequences. (Running on oeis4.)