A086778 - OEIS

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A086778

Number of n X n matrices over GF(5) with rank n-1.

1, 144, 461280, 36211968000, 70794513504000000, 3457427279866560000000000, 4220654362961578542000000000000000, 128805138489674665490472000000000000000000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`For n>=2: a(n) = product j=0...n-2 (5^n - 5^j)^2 / (5^(n-1)- 5^j).`
	CROSSREFS	`Cf. A085404, A053292, A060870.` `Sequence in context: A159424 A013751 A033514 * A159436 A193346 A003837` `Adjacent sequences: A086775 A086776 A086777 * A086779 A086780 A086781`
	KEYWORD	`nonn`
	AUTHOR	`Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 03 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Mar 28 2005`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.