id:A100576 - OEIS Search Results

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Smallest difference between distinct prime divisors of the n-th non-prime-power.

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1, 3, 1, 5, 2, 1, 3, 4, 9, 1, 11, 5, 1, 8, 15, 2, 1, 17, 10, 3, 1, 9, 2, 21, 1, 3, 14, 11, 1, 6, 5, 16, 27, 1, 29, 4, 8, 1, 15, 20, 2, 1, 35, 2, 17, 4, 1, 3, 39, 1, 12, 41, 26, 9, 1, 6, 21, 28, 45, 14, 1, 5, 8, 3, 1, 11, 2, 51, 1, 3, 34, 5, 1, 18, 27, 10, 57, 10, 1, 59, 38, 29, 1, 40, 3, 1, 12 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`6 is the first non-prime-power.` `Since 6 = 2*3, and 3-2 = 1, then a(1) = 1.`
	CROSSREFS	`Adjacent sequences: A100573 A100574 A100575 this_sequence A100577 A100578 A100579` `Sequence in context: A046531 A083722 A111426 this_sequence A131032 A130323 A130303`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet (qq-quet(AT)mindspring.com), Jan 02 2005`
	EXTENSIONS	`More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Aug 29 2006`

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Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.

AT&T Labs Research