A010676 - OEIS

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A010676

Period 2: repeat [0, 5].

0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..80.` `Index entries for linear recurrences with constant coefficients, signature (0,1).`
	FORMULA	`a(n) = 5/2(1-(-1)^n) = 5(n mod 2). - Paolo P. Lava, Oct 20 2006` `G.f.: 5x/((1-x)(1+x)). - R. J. Mathar, Nov 21 2011` `a(n) = a(n-2). - Wesley Ivan Hurt, Aug 19 2022`
	MATHEMATICA	`PadRight[{}, 120, {0, 5}] (* Harvey P. Dale, Feb 18 2013 *)`
	PROG	`(Magma) &cat [[0, 5]^^50]; // Bruno Berselli, Dec 10 2015` `(PARI) a(n)=n%2*5 \\ Charles R Greathouse IV, Jul 23 2016`
	CROSSREFS	`Sequence in context: A199092 A167260 A137520 * A071873 A036478 A059628` `Adjacent sequences: A010673 A010674 A010675 * A010677 A010678 A010679`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane.`
	STATUS	`approved`

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Last modified March 28 17:15 EDT 2023. Contains 361596 sequences. (Running on oeis4.)