id:A087231 - OEIS Search Results

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a(n) is the smallest number such that the exponent of p=2 factor in 6a(n)+4 equals n.

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1, 4, 6, 2, 26, 10, 106, 42, 426, 170, 1706, 682, 6826, 2730, 27306, 10922, 109226, 43690, 436906, 174762 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`For n>2, a(n) = [3/2*2^n - (-2)^n - 2]/3. - R. Stephan, May 10 2004`
	EXAMPLE	`n=170: m=6.170+4=1024=2^10, so a(10)=170.`
	CROSSREFS	`Cf. A085058, A087229, A087230.` `Sequence in context: A085595 A054222 A066891 this_sequence A019211 A086467 A138508` `Adjacent sequences: A087228 A087229 A087230 this_sequence A087232 A087233 A087234`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 28 2003`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.