A010710 - OEIS

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A010710

Period 2: repeat (4,5).

4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`Continued fraction of 2+2*sqrt(30)/5. - R. J. Mathar, Nov 21 2011`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (0,1).`
	FORMULA	`a(n)=-1/2(-1)^n+9/2 =5(n mod 2)+4[(n+1) mod 2] - Paolo P. Lava (paoloplava(AT)gmail.com), Oct 20 2006` `G.f.: (4+5x)/(1-x^2) [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Mar 20 2009]`
	PROG	`(PARI) a(n)=4+n%2 [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Mar 20 2009]`
	CROSSREFS	`Sequence in context: A196619 A063694 A068901 * A021026 A126128 A046565` `Adjacent sequences: A010707 A010708 A010709 * A010711 A010712 A010713`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.