A092918 - OEIS

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A092918

Number of connected hypergraphs(without multiple edges and without empty edges)on n labeled vertices.

2, 4, 96, 31840, 2147156736, 9223372011084915712, 170141183460469231602560095199828453376, 57896044618658097711785492504343953923912733397452774312021795134847892828160 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	REFERENCES	`G. Kilibarda and V. Jovovic, "Enumeration of some classes of T_0-hypergraphs", in preparation, 2004.`
	FORMULA	`E.g.f.: ln(Sum(2^(2^n-1)*x^n/n!, n=0..infinity)).`
	CROSSREFS	`Sequence in context: A156496 A007534 A009379 * A018428 A128773 A101068` `Adjacent sequences: A092915 A092916 A092917 * A092919 A092920 A092921`
	KEYWORD	`nonn`
	AUTHOR	`Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 16 2004`

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Last modified February 15 10:06 EST 2012. Contains 205763 sequences.