id:A165901 - OEIS Search Results

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a(0)=0, a(1)=1, a(n)=a(n-1)+2^(n-3)*a(n-2)

+0
2

0, 1, 1, 2, 4, 12, 44, 236, 1644, 16748, 227180, 4514668, 120830828, 4743850860, 252205386604, 19683018509164, 2085749545569132, 324572324799712108, 68670413434009029484, 21339842291507941739372, 9022108271913939454266220 (list; graph; listen)

	OFFSET	`0,4`
	PROGRAM	`(PARI) a(n)=if(n<2, n, a(n-1)+2^(n-3)*a(n-2))`
	CROSSREFS	`Cf. A015459.` `Sequence in context: A139669 A039301 A131529 this_sequence A074449 A131387 A152453` `Adjacent sequences: A165898 A165899 A165900 this_sequence A165902 A165903 A165904`
	KEYWORD	`nonn`
	AUTHOR	`Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Sep 29 2009`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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