id:A073484 - OEIS Search Results

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Number of gaps in factors of the n-th square-free number.

+0
8

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

	OFFSET	`1,69`
	COMMENT	`a(A000040(n))=0; a(A006094(n))=0; a(A002110(n))=0; a(A073485(n))=0; a(A073486(n))>0; a(A073487(n))=1; a(A073488(n))=2; a(A073489(n))=3;` `a(n)=0 iff A073483(n)=1.`
	EXAMPLE	`The 69th square-free number is 110=2511, therefore a(69)=2, as there are two gaps: between 2 and 5 and between 5 and 11.`
	CROSSREFS	`Cf. A005117, A073483.` `Sequence in context: A127499 A121361 A052343 this_sequence A081396 A100544 A130654` `Adjacent sequences: A073481 A073482 A073483 this_sequence A073485 A073486 A073487`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 03 2002`

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

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