id:A126663 - OEIS Search Results

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Absolute difference between largest prime factors of two successive semiprimes.

+0
4

1, 0, 2, 2, 2, 2, 4, 6, 8, 2, 6, 10, 12, 6, 10, 16, 10, 6, 8, 10, 2, 18, 10, 14, 26, 30, 24, 26, 14, 16, 18, 16, 28, 34, 16, 14, 36, 42, 6, 50, 20, 2, 24, 48, 20, 24, 58, 16, 44, 42, 48, 26, 30, 60, 70, 46, 30, 28, 24, 20, 80, 30, 34, 72, 12, 62, 84, 52, 36, 64, 12, 78, 36, 56, 96 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Absolute first difference of A084127.`
	EXAMPLE	`a(1) = 1 because 4 = 22 and 6 = 23 so 3 - 2 = 1;` `a(2) = 0 because 6 = 23 and 9 = 33 so 3 - 3 = 0;` `a(3) = 2 because 9 = 33 snd 10 = 25 so 5 - 3 = 2.`
	CROSSREFS	`Cf. A001358, A006530, A084127.` `Adjacent sequences: A126660 A126661 A126662 this_sequence A126664 A126665 A126666` `Sequence in context: A064877 A008363 A097198 this_sequence A032600 A103260 A060824`
	KEYWORD	`easy,nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Mar 23 2007`
	EXTENSIONS	`Edited and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Mar 25 2007`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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