id:A072746 - OEIS Search Results

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Number of a pairs of primes (p, q) with p<q and (p+q)/2=2^(floor(Log2(q))+1).

+0
3

0, 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`As for counting twin primes the convention is followed that a prime pair is <= n if its smaller member is <= n.`
	CROSSREFS	`Cf. A072742, A072743, A071538.` `Sequence in context: A054897 A003108 A111898 this_sequence A105390 A013941 A061798` `Adjacent sequences: A072743 A072744 A072745 this_sequence A072747 A072748 A072749`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 08 2002`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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