id:A054914 - OEIS Search Results

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Number of labeled connected digraphs with n nodes such that complement is also connected.

+0
1

1, 2, 44, 3572, 1005584, 1060875152, 4382913876704, 71987098738435232, 4721068803628864289024, 1237845578934919489219757312, 1298046978912816702510086132201984 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`V. A. Liskovets, Some easily derivable sequences, J. Integer Sequences, 3 (2000), #00.2.2.`
	FORMULA	`2*A003027(n)-A053763(n).`
	CROSSREFS	`Sequence in context: A161744 A054732 A161722 this_sequence A161745 A048566 A041241` `Adjacent sequences: A054911 A054912 A054913 this_sequence A054915 A054916 A054917`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 23 2000`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 17 2000`

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Last modified November 24 23:11 EST 2009. Contains 167435 sequences.

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