id:A080823 - OEIS Search Results

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a(n)=n for n<=4; for n>4, a(n) is the smallest integer greater than a(n-1) that shares common factors with some (i.e. at least one) but not all of previous 4 terms.

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	OFFSET	`1,2`
	CROSSREFS	`Cf. A079279.` `Adjacent sequences: A080820 A080821 A080822 this_sequence A080824 A080825 A080826` `Sequence in context: A132115 A047228 A032968 this_sequence A079279 A045577 A111020`
	KEYWORD	`easy,nonn`
	AUTHOR	`Matthew Vandermast (ghodges14(AT)comcast.net), Mar 26 2003`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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