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Define the divisor symmetry of a number n to be k if n-r and n+r have the same number of divisors for r = 1 to k but not for k+1. Sequence contains the divisor symmetry of n.

+0
6

0, 0, 0, 1, 0, 1, 1, 0, 2, 0, 0, 2, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0 (list; graph; listen)

	OFFSET	`1,9`
	COMMENT	`Subsidiary sequence: Indices of the first occurrence of n in this sequence.` `Is this sequence bounded? Through n = 20000, a(432)=6 is the only value greater than 4. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), May 12 2006`
	CROSSREFS	`Cf. A093488, A093491, A093493, A093494.` `Sequence in context: A113129 A127826 A109983 this_sequence A128771 A139380 A000122` `Adjacent sequences: A093489 A093490 A093491 this_sequence A093493 A093494 A093495`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 16 2004`
	EXTENSIONS	`More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), May 12 2006`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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