id:A085010 - OEIS Search Results

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a(n)=2^(2^n)*sum(k=0,n,1/2^(2^k)).

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1, 3, 13, 209, 53505, 3506503681, 15060318633198616577, 277813843495134114797235287762174738433, 94535152227927400227782074307303551040545228366095741656402842333161034088449 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=A074854(2^n)=; a(n)=floor(c*2^(2^n)) where c=sum(k>=0, 1/2^(2^k))=0.81642150902...`
	CROSSREFS	`Cf. A007404.` `Adjacent sequences: A085007 A085008 A085009 this_sequence A085011 A085012 A085013` `Sequence in context: A002065 A087601 A112093 this_sequence A100441 A036680 A111431`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 19 2003`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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