id:A108797 - OEIS Search Results

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Number of base-2 strong pseudoprimes (A001262) less than 2^n.

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1, 3, 4, 6, 7, 11, 18, 24, 34, 49, 75, 104, 147 (list; graph; listen)

	OFFSET	`11,2`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	EXAMPLE	`a(12)=3 since 2047, 3277 and 4033 are 2-SPRPs less than 4096.`
	CROSSREFS	`Cf. A001262, A055552.` `Sequence in context: A075434 A085253 A073906 this_sequence A089161 A060965 A153883` `Adjacent sequences: A108794 A108795 A108796 this_sequence A108798 A108799 A108800`
	KEYWORD	`more,nonn`
	AUTHOR	`Charles R. Greathouse (greathcr(AT)muohio.edu), Dec 03 2005`

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