A010714 - OEIS

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A010714

Period 2: repeat (4,9).

4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4, 9, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (0,1).`
	FORMULA	`a(n)=-5/2(-1)^n+13/2 =9(n mod 2)+4*[(n+1) mod 2] - Paolo P. Lava (paoloplava(AT)gmail.com), Oct 20 2006` `G.f. (4+9x)/((1-x)(1+x)). - R. J. Mathar, Nov 21 2011`
	PROG	`(PARI) a(n)=4+n%2*5 \\ Charles R Greathouse IV, Dec 21 2011`
	CROSSREFS	`Sequence in context: A021673 A141653 A071793 * A089090 A204919 A113484` `Adjacent sequences: A010711 A010712 A010713 * A010715 A010716 A010717`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.