id:A078498 - OEIS Search Results

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Let q(n) be the prime defined in A078497; sequence gives (q(n)-prime(n))/6.

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1, 1, 1, 2, 1, 2, 2, 1, 2, 4, 1, 1, 2, 3, 1, 2, 1, 3, 4, 3, 5, 2, 1, 1, 5, 4, 4, 3, 5, 2, 3, 2, 1, 6, 5, 1, 2, 3, 7, 5, 5, 7, 2, 10, 5, 8, 1, 2, 5, 2, 1, 1, 2, 7, 1, 2, 9, 4, 4, 7, 6, 6, 3, 5, 6, 3, 1, 7, 5, 1, 5, 6, 5, 4, 3, 2, 5, 2, 2, 4, 3, 4, 3, 14, 3, 4, 4, 2, 9, 2, 7, 9, 8, 7, 4, 13 (list; graph; listen)

	OFFSET	`5,4`
	FORMULA	`For n>4 a(n)=( min{p : p>prime(n), p and 2*prime(n)-p are primes} - prime(n) ) / 6.`
	EXAMPLE	`a(6)=1, a(25)=5.`
	CROSSREFS	`Cf. A078496, A078497.` `Sequence in context: A131400 A132749 A140186 this_sequence A131240 A107027 A107030` `Adjacent sequences: A078495 A078496 A078497 this_sequence A078499 A078500 A078501`
	KEYWORD	`nonn,easy`
	AUTHOR	`Serhat Sevki Dincer (sevki(AT)ug.bilkent.edu.tr), Nov 27 2002`
	EXTENSIONS	`More terms from Pab Ter (pabrlos(AT)yahoo.com), May 27 2004`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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