A005806 - OEIS

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A005806

Comparative probability orderings on n elements.
(Formerly M2072)

1, 1, 2, 14, 546, 169444, 560043206 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	REFERENCES	`T. Fine and J. Gill, Comparative probability relations, Ann. Prob. 4 (1976) 667-673.` `D. Maclagan, Boolean Term Orders and the Root System B_n, Order 15 (1999), 279-295.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`D. Maclagan, [math/9809134] Boolean Term Orders and the Root System B_n`
	EXAMPLE	`For n=3, the two orders are 1<2<12<3<13<23<123 and 1<2<3<12<13<23<123`
	CROSSREFS	`Cf. A009997.` `Sequence in context: A160710 A009997 A048137 * A015184 A012002 A012005` `Adjacent sequences: A005803 A005804 A005805 * A005807 A005808 A005809`
	KEYWORD	`hard,nice,nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`a(7) from Diane Maclagan and Michael Kleber (maclagan(AT)math.berkeley.edu, michael.kleber(AT)gmail.com)`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.