id:A128995 - OEIS Search Results

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For a number n, let r=n+1, s = the least number greater than r and coprime to nr; n is here if nr-s, rs-n and sn-r are all prime.

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3, 4, 5, 6, 9, 13, 14, 15, 19, 20, 26, 32, 35, 36, 42, 55, 68, 88, 89, 93, 118, 145, 155, 169, 172, 174, 186, 234, 259, 330, 356, 384, 405, 488, 494, 495, 530, 569, 594, 608, 660, 715, 726, 746, 763, 779, 825, 863, 1069, 1124, 1143, 1149, 1320, 1342, 1365 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`14 is here because 14x15-17, 15x17-14 and 17x14-15 are all prime.`
	CROSSREFS	`Sequence in context: A022884 A105857 A103055 this_sequence A014101 A039035 A065798` `Adjacent sequences: A128992 A128993 A128994 this_sequence A128996 A128997 A128998`
	KEYWORD	`nonn`
	AUTHOR	`J. M. Bergot (thekingfishb(AT)yahoo.ca), Apr 30 2007`
	EXTENSIONS	`Edited by Don Reble (djr(AT)nk.ca), Jan 20 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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