id:A107058 - OEIS Search Results

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a(n) = smallest number m>0 such that prime(n)*prime(n+1)-m is a prime.

+0
3

1, 2, 4, 4, 4, 10, 6, 4, 6, 12, 18, 6, 4, 4, 14, 6, 6, 8, 6, 4, 18, 4, 18, 4, 6, 4, 18, 6, 16, 4, 4, 8, 6, 4, 16, 18, 2, 10, 12, 18, 18, 22, 6, 10, 4, 6, 2, 22, 6, 4, 6, 6, 34, 8, 2, 18, 6, 26, 24, 30, 6, 12, 6, 16, 30, 10, 8, 6, 22, 6, 8, 4, 2, 8, 18, 26, 10, 4, 12, 30, 10, 12, 4, 24, 6, 6, 6 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A107059: records in A107058; A106172: positions of records in A107058. Cf. A074928: a(n)>0 such that p(n)*p(n+1)+a(n) is a smallest prime.` `Cf. A074928, A107019, A107057, A107059, A106172.` `Sequence in context: A081524 A021413 A082855 this_sequence A101449 A134188 A140295` `Adjacent sequences: A107055 A107056 A107057 this_sequence A107059 A107060 A107061`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), May 10 2005`

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Last modified December 6 11:04 EST 2009. Contains 170427 sequences.

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