A066407 - OEIS

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A066407

Number of orthogonal arrays OA(6,n,2,1).

0, 0, 2880, 109440, 2753280, 60249600, 1249274880, 25351280640, 509998510080, 10223941017600, 204671339642880, 4094969962659840, 81911756682362880, 1638334041381273600, 32767472282735738880, 655355778068620247040 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	REFERENCES	`J.-Z. Zhang, Z.-S. You and Z.-L. Li, Enumeration of binary orthogonal arrays of strength 1, Discrete Math., 239 (2000), 191-198.`
	FORMULA	`2^n(10^n-154^n+45*2^n-40).`
	CROSSREFS	`Sequence in context: A175750 A179703 A134856 * A184602 A144547 A185502` `Adjacent sequences: A066404 A066405 A066406 * A066408 A066409 A066410`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 25 2001`

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Last modified February 17 23:38 EST 2012. Contains 206085 sequences.