id:A006848 - OEIS Search Results

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Number of extreme points of the set of n X n symmetric doubly-substochastic matrices.
(Formerly M1515)

+0
1

1, 2, 5, 18, 75, 414, 2643, 20550, 180057, 1803330, 19925541, 242749602, 3218286195, 46082917278, 710817377715, 11689297807734, 205359276208113, 3812653265319810 (list; graph; listen)

	OFFSET	`0,2`
	REFERENCES	`R. P. Stanley, Differentiably finite power series, European J. Combin., 1 (1980), 175-188.`
	CROSSREFS	`Adjacent sequences: A006845 A006846 A006847 this_sequence A006849 A006850 A006851` `Sequence in context: A045612 A103940 A039744 this_sequence A137861 A111916 A118187`
	KEYWORD	`nonn,more`
	AUTHOR	`njas`

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

AT&T Labs Research