A046167 - OEIS

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A046167

Number of minimal covers on n objects with 6 members.

0, 0, 0, 0, 0, 1, 420, 100814, 18151560, 2723868147, 359750257020, 43199991728608, 4817721638970240, 506352103838393813, 50691406225311551700, 4872449650707855334482, 452435489306282260691640 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,7`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	FORMULA	`G.f.: x^6/[(1-57x)(1-58x)(1-59x)(1-60x)(1-61x)(1-62x)(1-63x)].`
	CROSSREFS	`Cf. A035348.` `Sequence in context: A135340 A135380 A035846 * A059951 A028683 A198163` `Adjacent sequences: A046164 A046165 A046166 * A046168 A046169 A046170`
	KEYWORD	`nonn`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`

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Last modified February 14 06:48 EST 2012. Contains 205577 sequences.