id:A147675 - OEIS Search Results

Search: id:A147675

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Divide by 2, multiply by 4, repeat.

+0
4

10, 5, 20, 10, 40, 20, 80, 40, 160, 80, 320, 160, 640, 320, 1280, 640, 2560, 1280, 5120, 2560, 10240, 5120, 20480, 10240, 40960, 20480, 81920, 40960, 163840, 81920, 327680, 163840, 655360, 327680, 1310720, 655360, 2621440, 1310720, 5242880 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A147675-A147678 are from a quiz that someone asked me to help them with.`
	FORMULA	`a(n)=2a(n-2) = 5A135530(n-1). G.f.: -5x(2+x)/(-1+2*x^2). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 22 2009]`
	CROSSREFS	`Sequence in context: A158486 A040093 A046797 this_sequence A050136 A070291 A141321` `Adjacent sequences: A147672 A147673 A147674 this_sequence A147676 A147677 A147678`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Apr 21 2009`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 22 2009`

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

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