A053543 - OEIS

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A053543

Distance to closest prime in sequence of composites.

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; refs; listen; history; internal format)

	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 * A161099 A118663 A205119` `Adjacent sequences: A053540 A053541 A053542 * A053544 A053545 A053546`
	KEYWORD	`easy,nonn`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net), Jan 16 2000`

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Last modified February 16 06:46 EST 2012. Contains 205867 sequences.