A123760 - OEIS

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A123760

Numbers whose binary expansion is 1xy100...0 where x,y = 0 or 1.

9, 11, 13, 15, 18, 22, 26, 30, 36, 44, 52, 60, 72, 88, 104, 120, 144, 176, 208, 240, 288, 352, 416, 480, 576, 704, 832, 960, 1152, 1408, 1664, 1920, 2304, 2816, 3328, 3840, 4608, 5632, 6656, 7680, 9216, 11264, 13312, 15360, 18432, 22528, 26624 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(n) = 2*a(n-4) for n > 4; A093873(a(n)) = 3.`
	LINKS	`Table of n, a(n) for n=1..47.`
	CROSSREFS	`Cf. A029744, A070875, A070876.` `Sequence in context: A248629 A008558 A335912 * A289686 A251394 A155877` `Adjacent sequences: A123757 A123758 A123759 * A123761 A123762 A123763`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller, Oct 13 2006`
	STATUS	`approved`

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Last modified January 18 05:18 EST 2021. Contains 340250 sequences. (Running on oeis4.)