id:A136049 - OEIS Search Results

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a(n)=number of primes p such that (p,p+2) is a pair of twin primes with n^2 + n < p < n^2+3*n+2.

+0
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2, 1, 1, 1, 1, 0, 2, 0, 2, 0, 2, 1, 2, 2, 1, 1, 1, 1, 1, 2, 0, 1, 2, 2, 1, 0, 1, 3, 1, 0, 3, 2, 1, 1, 4, 0, 3, 1, 2, 3, 1, 2, 2, 2, 5, 1, 3, 1, 1, 1, 4, 2, 1, 1, 2, 3, 4, 4, 2, 2, 2, 4, 4, 5, 2, 3, 2, 3, 2, 3, 1, 1, 5, 3, 2, 2, 2, 3, 2, 2, 6, 4, 1, 2, 3, 4, 1, 3, 1, 3, 3, 2, 3, 4, 2, 5, 2, 3, 5, 3, 4, 2, 2, 4, 2 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Pierre CAMI, Table of n, a(n) for n = 1..5000`
	EXAMPLE	`For n=1 we can take p = 3 and p = 5, with twin primes (3 5) and (5 7) and 3 and 5 are > 2 and < 6 so a(1)=2`
	CROSSREFS	`Adjacent sequences: A136046 A136047 A136048 this_sequence A136050 A136051 A136052` `Sequence in context: A087116 A033264 A080234 this_sequence A135694 A025924 A025904`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Dec 12 2007; corrected Jan 24 2008`
	EXTENSIONS	`Verified by Don Reble (djr@nk.ca), Jun 22 2008, including the b-file.`

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Last modified October 6 15:53 EDT 2008. Contains 144667 sequences.

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