A083581 - OEIS

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A083581

8/3-5(-2)^n/3.

1, 6, -4, 16, -24, 56, -104, 216, -424, 856, -1704, 3416, -6824, 13656, -27304, 54616, -109224, 218456, -436904, 873816, -1747624, 3495256, -6990504, 13981016, -27962024, 55924056, -111848104, 223696216, -447392424, 894784856, -1789569704, 3579139416, -7158278824 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (-1,2)`
	FORMULA	`a(n)=(8-5(-2)^n)/3.` `G.f. (1+7x)/((1-x)(1+2x)).` `E.g.f. (8exp(x)-5exp(-2x))/3`
	CROSSREFS	`Cf. A083582.` `Sequence in context: A096038 A199890 A198459 * A171089 A180495 A160248` `Adjacent sequences: A083578 A083579 A083580 * A083582 A083583 A083584`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 01 2003`

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.