id:A020727 - OEIS Search Results

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A020727

Pisot sequences P(2,7), T(2,7).

+0
2

2, 7, 24, 82, 280, 956, 3264, 11144, 38048, 129904, 443520, 1514272, 5170048, 17651648, 60266496, 205762688, 702517760, 2398545664, 8189147136, 27959497216, 95459694592, 325919783936, 1112759746560, 3799199418368, 12971278180352, 44286713884672 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`a(n) = 4a(n-1) - 2a(n-2) (holds at least up to n = 1000).`
	CROSSREFS	`Subsequence of A003480. See A008776 for definitions of Pisot sequences.` `Sequence in context: A027128 A099463 A003480 this_sequence A088854 A000777 A052986` `Adjacent sequences: A020724 A020725 A020726 this_sequence A020728 A020729 A020730`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.

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