id:A053543 - OEIS Search Results

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Distance to closest prime in sequence of composites.

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1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 3, 2, 1, 1, 1, 2, 3, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 3, 2, 1, 1, 2, 3, 2, 1, 1, 1, 2, 3, 2, 1, 1, 2, 1, 1, 1, 2, 3, 2, 1, 1, 2, 1, 1, 2, 3, 2, 1, 1, 2, 3, 4, 3, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 3, 4, 5, 6, 7, 6, 5, 4, 3, 2, 1, 1, 2, 1, 1, 2, 3, 2, 1, 1, 1 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`Beginning at 2, list consecutive numbers. Measure distance of each composite to nearest prime.`
	EXAMPLE	`Fourth composite number is 9; distance to nearest prime, 7 or 11, is 2, so a(4) = 2.`
	CROSSREFS	`Sequence in context: A161101 A115362 A161100 this_sequence A161099 A118663 A102097` `Adjacent sequences: A053540 A053541 A053542 this_sequence A053544 A053545 A053546`
	KEYWORD	`easy,nonn`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net), Jan 16 2000`

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Last modified December 4 12:48 EST 2009. Contains 170310 sequences.

AT&T Labs Research