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Number of n-input 2-output switching networks under action of symmetric group S(n) on the inputs and complementing group C(2,2) on the outputs.
(Formerly M3675 N1498)

+0
2

4, 40, 3264, 45826304, 38436615422689280, 118153600037991449448840725115437056, 5743655220104970017628478254229574276569046648639726053254944342556016640 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327.`
	LINKS	`Index entries for sequences related to switching networks`
	CROSSREFS	`Cf. A000612, A000842.` `Adjacent sequences: A000838 A000839 A000840 this_sequence A000842 A000843 A000844` `Sequence in context: A102922 A139688 A072445 this_sequence A059918 A002677 A119527`
	KEYWORD	`nonn`
	AUTHOR	`njas`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Feb 26 2000`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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