id:A072060 - OEIS Search Results

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A072060

Smallest prime p such that 2*p+1 has n prime factors (with multiplicity).

+0
3

2, 7, 13, 67, 283, 607, 1093, 12757, 22963, 49207, 482233, 1623847, 797161, 14614627, 19929037, 35872267, 150663523, 2044719247, 1355971711, 9879222469, 37773497677, 200490103057, 172595827849, 235357947067, 1176789735337 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(4)=67=A000040(19): 267+1 = 135 = 53^3, 4 factors.`
	CROSSREFS	`Cf. A001222, A023595, A072055, A072059.` `Sequence in context: A129592 A153136 A127487 this_sequence A106912 A099629 A092836` `Adjacent sequences: A072057 A072058 A072059 this_sequence A072061 A072062 A072063`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 11 2002`
	EXTENSIONS	`More terms from Don Reble (djr(AT)nk.ca), Apr 15 2003`

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

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