id:A159700 - OEIS Search Results

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Number of different pairs of primes p,q such that : p<(q-2) , p is a twin prime of p-2 or p+2 and q is a twin prime of q-2 or q+2 , 2*n=p+q

+0
3

0, 0, 0, 0, 1, 0, 1, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 3, 4, 2, 1, 2, 1, 1, 2, 2, 2, 2, 1, 2, 4, 3, 3, 4, 2, 1, 2, 1, 2, 4, 2, 0, 0, 0, 2, 4, 3, 2, 2, 2, 4, 6, 3, 2, 4, 2, 1, 2, 1, 2, 4, 2, 1, 2, 2, 3, 4, 2, 2, 4, 3, 3, 4, 2, 2, 4, 2, 3, 6, 3, 1, 2, 1, 3, 6, 4, 2, 2, 1, 2, 4, 3, 4, 6, 4, 3, 4, 2, 6, 12 (list; graph; listen)

	OFFSET	`1,8`
	COMMENT	`conjecture : for n>2104 there is at least one such pair of primes p+q=2*n`
	LINKS	`Pierre CAMI, Table of n, a(n) for n=1..50000`
	EXAMPLE	`3+13=16,5+11=16 so for n=8 2 pairs p,q such that p+q=2*8 , p<(q-2) p and q have a twin prime`
	CROSSREFS	`Sequence in context: A087472 A054348 A037813 this_sequence A083534 A102300 A087010` `Adjacent sequences: A159697 A159698 A159699 this_sequence A159701 A159702 A159703`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierre-cami(AT)orange.fr), Apr 20 2009`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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