id:A091013 - OEIS Search Results

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Numbers having more than one divisor d such that for some x also d-x and d+x are divisors.

+0
3

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	OFFSET	`1,1`
	COMMENT	`A091009(a(n)) > 1.`
	CROSSREFS	`Cf. A091012, A091011, A091010.` `Sequence in context: A056773 A136446 A074726 this_sequence A159886 A113756 A055482` `Adjacent sequences: A091010 A091011 A091012 this_sequence A091014 A091015 A091016`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 13 2003`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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