A000830 - OEIS

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A000830

Number of switching networks (see Harrison reference for precise definition).
(Formerly M4913 N2106)

13, 158, 66336, 122544034314, 3438726436264160394888822, 22703637642460032506699838997723739937009913804573344 (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 3 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: A175519 A015470 A084328 * A205170 A205163 A118673` `Adjacent sequences: A000827 A000828 A000829 * A000831 A000832 A000833`
	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 23:53 EST 2012. Contains 205860 sequences.