id:A135360 - OEIS Search Results

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a(n)=4a(n-1)-6a(n-2)+4a(n-3), n > 3.

+0
1

1, 2, 4, 7, 12, 22, 44, 92, 192, 392, 784 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Sequence identical to its fourth differences. Coupled sequences whose sum is 2^n, A000079.`
	CROSSREFS	`Sequence in context: A127542 A023432 A072641 this_sequence A082548 A007323 A099604` `Adjacent sequences: A135357 A135358 A135359 this_sequence A135361 A135362 A135363`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Dec 08 2007`

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Last modified December 20 16:09 EST 2009. Contains 171081 sequences.