A092517 - OEIS

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A092517

Product of tau-values for consecutive integers.

2, 4, 6, 6, 8, 8, 8, 12, 12, 8, 12, 12, 8, 16, 20, 10, 12, 12, 12, 24, 16, 8, 16, 24, 12, 16, 24, 12, 16, 16, 12, 24, 16, 16, 36, 18, 8, 16, 32, 16, 16, 16, 12, 36, 24, 8, 20, 30, 18, 24, 24, 12, 16, 32, 32, 32, 16, 8, 24, 24, 8, 24, 42, 28, 32, 16, 12, 24, 32, 16, 24, 24, 8, 24, 36 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Number of divisors of the n-th oblong number. - Chandler`
	LINKS	`Ray Chandler, Table of n, a(n) for n=1..10000`
	FORMULA	`a(n) = A000005(n)A000005(n+1) = A000005(n(n+1)) = A000005(A002378(n)) = 2*A063123(n).`
	MAPLE	`seq(tau(n)*tau(n+1), n=1..73); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 22 2007`
	PROG	`(MAGMA) [ NumberOfDivisors(n^2+n) : n in [1..100]]; - Vincenzo Librandi, Apr 03 2011`
	CROSSREFS	`Cf. A063440, A083539.` `Sequence in context: A111973 A133691 A161655 * A128558 A090346 A092989` `Adjacent sequences: A092514 A092515 A092516 * A092518 A092519 A092520`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 06 2004`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 23 2008`

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Last modified February 15 09:06 EST 2012. Contains 205746 sequences.