id:A062740 - OEIS Search Results

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Number of connected labeled graphs with loops.

+0
1

1, 2, 4, 32, 608, 23296, 1709056, 238880768, 64396439552, 33943701028864, 35324404321091584, 72994114660256448512, 300460426062916084563968, 2468021884106048216693211136, 40495494119922790159005962469376 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`E.g.f.: 1+log( Sum_{n >= 0} 2^binomial(n+1, 2)*x^n/n! ).`
	CROSSREFS	`Sequence in context: A134958 A101460 A118992 this_sequence A122214 A122216 A100117` `Adjacent sequences: A062737 A062738 A062739 this_sequence A062741 A062742 A062743`
	KEYWORD	`easy,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Jul 12 2001`

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Last modified July 4 18:25 EDT 2008. Contains 140886 sequences.

AT&T Labs Research