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A010698 Period 2: repeat (2,8). 3
2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

This is the regular (simple) continued fraction for (2+sqrt(5))/2. - Antonia Redondo Buitrago, Jul 30 2009

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (0,1).

FORMULA

a(n)=-3*(-1)^n+5 =8*(n mod 2)+2*[(n+1) mod 2] - Paolo P. Lava (paoloplava(AT)gmail.com), Oct 20 2006

G.f.: 2(1+4x)/((1-x)(1+x)). a(n)=2*A010685(n). [From R. J. Mathar, Oct 20 2008]

CROSSREFS

Sequence in context: A141449 A065485 A064912 * A010466 A086396 A195844

Adjacent sequences:  A010695 A010696 A010697 * A010699 A010700 A010701

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 18:50 EST 2012. Contains 205840 sequences.