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A040872 Continued fraction for sqrt(903). 1
30, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60, 20, 60 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..62.

Index entries for continued fractions for constants

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

FORMULA

a(n)=40+20*(-1)^n-30*[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava, May 29 2009]

MAPLE

with(numtheory): Digits := 300: convert(evalf(sqrt(903)), confrac);

CROSSREFS

Sequence in context: A070891 A033971 A193220 * A268855 A117749 A283621

Adjacent sequences:  A040869 A040870 A040871 * A040873 A040874 A040875

KEYWORD

nonn,cofr,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified July 19 10:56 EDT 2019. Contains 325155 sequences. (Running on oeis4.)