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A040206 Continued fraction for sqrt(221). 2
14, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6, 2, 6, 1, 28, 1, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..86.

Index entries for continued fractions for constants

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

FORMULA

a(n)=(1/90)*{-361*(n mod 6)+119*[(n+1) mod 6]-16*[(n+2) mod 6]+104*[(n+3) mod 6]-31*[(n+4) mod 6]+449*[(n+5) mod 6]}-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(221)), confrac);

CROSSREFS

Sequence in context: A171693 A235704 A229199 * A040207 A036163 A040208

Adjacent sequences:  A040203 A040204 A040205 * A040207 A040208 A040209

KEYWORD

nonn,cofr,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 19 08:57 EST 2019. Contains 320309 sequences. (Running on oeis4.)