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A000829 Number of switching networks (see Harrison reference for precise definition).
(Formerly M4410 N1863)
0
7, 34, 1056, 5884954, 2402661748356256, 3692300014084218317379484106943488, 89744612814140156627611342470220985493433638691231381252948710213328896 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Next term is too big to list here. Equivalence is permutation and complementation of n variables on the domain and permutation of 2 variables on the output. [Sean A. Irvine, Jul 12 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

Index entries for sequences related to switching networks

CROSSREFS

Sequence in context: A027842 A027683 A196968 * A061825 A077536 A152744

Adjacent sequences:  A000826 A000827 A000828 * A000830 A000831 A000832

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Jul 11 2011

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Last modified February 15 23:34 EST 2012. Contains 205860 sequences.