id:A078883 - OEIS Search Results

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Lesser member p of a twin prime pair such that p+1 is 3-smooth.

+0
3

3, 5, 11, 17, 71, 107, 191, 431, 1151, 2591, 139967, 472391, 786431, 995327, 57395627, 63700991, 169869311, 4076863487, 10871635967, 2348273369087, 56358560858111, 79164837199871, 84537841287167, 150289495621631 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = A027856(n)-1 = A078884(n)-2.`
	EXAMPLE	`A000040(20)=71 and 71+1=72=2^3*3^2=A003586(17) and 71+2=73=A000040(21), therefore 71 is a term.`
	CROSSREFS	`Cf. A001359, A014574, A003586.` `Apart from initial terms, same as A059960.` `Sequence in context: A167466 A101781 A101783 this_sequence A155990 A109556 A167675` `Adjacent sequences: A078880 A078881 A078882 this_sequence A078884 A078885 A078886`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 11 2002`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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