id:A092517 - OEIS Search Results

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Product of tau-values for consecutive integers.

+0
5

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; listen)

	OFFSET	`1,1`
	COMMENT	`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`
	CROSSREFS	`Cf. A063440, A083539.` `Sequence in context: A114218 A111973 A133691 this_sequence A128558 A090346 A092989` `Adjacent sequences: A092514 A092515 A092516 this_sequence 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 September 6 16:04 EDT 2008. Contains 143483 sequences.

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