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A040200 Continued fraction for sqrt(215). 1
14, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1, 28, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..83.

Index entries for continued fractions for constants

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 1).

FORMULA

a(n)=(1/24)*{-131*(n mod 4)+31*[(n+1) mod 4]+31*[(n+2) mod 4]+193*[(n+3) mod 4]}-14*[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava, Apr 23 2009]

MAPLE

with(numtheory): Digits := 300: convert(evalf(sqrt(215)), confrac);

MATHEMATICA

ContinuedFraction[Sqrt[215], 90] (* Harvey P. Dale, Nov 24 2011 *)

CROSSREFS

Sequence in context: A232210 A040199 A173747 * A040198 A040197 A040196

Adjacent sequences:  A040197 A040198 A040199 * A040201 A040202 A040203

KEYWORD

nonn,cofr,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 18 20:29 EDT 2018. Contains 313840 sequences. (Running on oeis4.)