id:A053249 - OEIS Search Results

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Number of divisors of n such that n and n+1 have the same sum of divisors.

+0
9

4, 4, 8, 8, 12, 8, 8, 4, 6, 12, 10, 4, 16, 12, 8, 8, 8, 12, 16, 8, 8, 16, 16, 16, 16, 8, 16, 8, 16, 4, 16, 16, 16, 12, 24, 12, 16, 8, 16, 16, 8, 16, 16, 12, 16, 16, 16, 16, 12, 12, 12, 16, 16, 40, 16, 16, 32, 12, 24, 32, 24, 16, 16, 24, 24, 4, 24, 16, 64, 24, 16, 8, 16, 16, 16, 24, 32, 32, 20, 16 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1378`
	FORMULA	`a(n) = tau(A002961(n))`
	CROSSREFS	`Cf. A000203, A000005, A002961, A053215, A054002, A054003.` `Sequence in context: A016712 A076359 A105675 this_sequence A071339 A101921 A093340` `Adjacent sequences: A053246 A053247 A053248 this_sequence A053250 A053251 A053252`
	KEYWORD	`nonn,nice`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu) Jan 11, 2000`
	EXTENSIONS	`More terms from Naohiro Nomoto (6284968128(AT)geocities.co.jp), Mar 16 2001`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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