id:A054949 - OEIS Search Results

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Number of labeled semi-strong digraphs on n nodes with an odd number of components.

+0
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1, 1, 19, 1612, 565276, 734799976, 3523103676184, 63519230066936512, 4400411105398828102336, 1190433708177460323642937216, 1270463865199882936737403300783744, 5381067966904826663696685903449569172992, 90765788839502187660342772995967835888789034496 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`V. A. Liskovets, Some easily derivable sequences, J. Integer Sequences, 3 (2000), #00.2.2.`
	CROSSREFS	`Sequence in context: A047910 A051847 A002115 this_sequence A068748 A098846 A116012` `Adjacent sequences: A054946 A054947 A054948 this_sequence A054950 A054951 A054952`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 24 2000`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 11 2003`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

AT&T Labs Research