id:A081870 - OEIS Search Results

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a(1)=1, a(n)=2*a(n-1)+1 if that number is not squarefree, a(n)=a(n-1)+1 otherwise.

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1, 2, 3, 4, 9, 10, 11, 12, 25, 26, 27, 28, 29, 30, 31, 63, 64, 65, 66, 67, 135, 136, 137, 275, 276, 277, 278, 279, 280, 281, 282, 283, 567, 568, 569, 570, 571, 1143, 1144, 1145, 1146, 1147, 2295, 2296, 2297, 2298, 2299, 4599, 4600, 4601, 4602, 4603, 9207, 9208 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=r(n)*2^b(n) where b(n) is an integer sequence and r(n) converges to 1.124922752241150441104513529....`
	CROSSREFS	`Sequence in context: A135210 A037468 A047454 this_sequence A165315 A047339 A084368` `Adjacent sequences: A081867 A081868 A081869 this_sequence A081871 A081872 A081873`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 12 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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