A000856 - OEIS

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A000856

Number of n-input 2-output switching networks under the action of S(n) on the inputs and S(2) and complementing group C(2,2) on the outputs
(Formerly M3108 N1259)

3, 24, 1676, 22920064, 19218307944059712, 59076800018995725211209511239630848, 2871827610052485008814239127114787142200471197616427462842969283498868736 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	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: A202944 A056207 A075655 * A047678 A047938 A080202` `Adjacent sequences: A000853 A000854 A000855 * A000857 A000858 A000859`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Aug 10 2011`

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Last modified February 15 10:28 EST 2012. Contains 205763 sequences.