A085404 - OEIS

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A085404

Number of n X n matrices over GF(4) with rank n-1.

1, 75, 79380, 1310904000, 344319762124800, 1444887697908695040000, 96976611786040182520676352000, 104131021972308383324202529613414400000, 1788970984376098024967914354100894418012733440000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`For n>=2: a(n) = product j=0...n-2 (4^n - 4^j)^2 / (4^(n-1)- 4^j).`
	CROSSREFS	`Cf. A086752, A053291, A060869.` `Sequence in context: A114910 A093275 A116527 * A110100 A003745 A068942` `Adjacent sequences: A085401 A085402 A085403 * A085405 A085406 A085407`
	KEYWORD	`nonn,easy`
	AUTHOR	`Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 31 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jan 31 2005`

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Last modified February 14 05:09 EST 2012. Contains 205570 sequences.