id:A020708 - OEIS Search Results

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A020708

Pisot sequences E(4,9), P(4,9).

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4, 9, 20, 44, 97, 214, 472, 1041, 2296, 5064, 11169, 24634, 54332, 119833, 264300, 582932, 1285697, 2835694, 6254320, 13794337, 30424368, 67103056, 148000449, 326425266, 719953588, 1587907625, 3502240516, 7724434620, 17036776865, 37575794246, 82876023112 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`a(n) = 2a(n-1) + a(n-3) (holds at least up to n = 1000).`
	CROSSREFS	`Subsequence of A008998. See A008776 for definitions of Pisot sequences.` `Sequence in context: A132175 A019493 A019492 this_sequence A144686 A144685 A109110` `Adjacent sequences: A020705 A020706 A020707 this_sequence A020709 A020710 A020711`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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