A000839 - OEIS

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A000839

Number of n-input 3-output switching networks under action of complementing group on the inputs and outputs.
(Formerly M4577 N1951)

8, 176, 265728, 2199038984192, 309485009821617747608469504, 12259964326927110866866776295192695943928870296113643520 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(n)=2^(3*(2^n-1)-n)+2^(2^n+2^(n-1))-2^(2^n+2^(n-1)-n). [Sean A. Irvine, Jul 14 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	`Cf. A000133, A000838.` `Sequence in context: A027464 A064342 A099175 * A001596 A159326 A089456` `Adjacent sequences: A000836 A000837 A000838 * A000840 A000841 A000842`
	KEYWORD	`easy,nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 26 2000`

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.