This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A040021 Continued fraction for sqrt(27). 12
 5, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5, 10, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Harry J. Smith, Table of n, a(n) for n = 0..20000 G. Xiao, Contfrac Index entries for linear recurrences with constant coefficients, signature (0, 1). FORMULA a(n) = (1/2)*(15 + 5*(-1)^n) - 5*(binomial(2*n,n) mod 2), with n>=0. - Paolo P. Lava, Jun 09 2009 EXAMPLE 5.1961524227066318805823390... = 5 + 1/(5 + 1/(10 + 1/(5 + 1/(10 + ...)))). - Harry J. Smith, Jun 04 2009 MAPLE Digits := 100: convert(evalf(sqrt(N)), confrac, 90, 'cvgts'): MATHEMATICA ContinuedFraction[Sqrt[27], 300] (* Vladimir Joseph Stephan Orlovsky, Mar 05 2011 *) PadRight[{5}, 120, {10, 5}] (* Harvey P. Dale, Jul 19 2015 *) PROG (PARI) { allocatemem(932245000); default(realprecision, 35000); x=contfrac(sqrt(27)); for (n=0, 20000, write("b040021.txt", n, " ", x[n+1])); } \\ Harry J. Smith, Jun 04 2009 (MAGMA) ContinuedFraction(Sqrt(27)); // G. C. Greubel, Feb 16 2018 CROSSREFS Cf. A010482 Decimal expansion. - Harry J. Smith, Jun 04 2009 Sequence in context: A290240 A245088 A078560 * A003882 A168284 A166598 Adjacent sequences:  A040018 A040019 A040020 * A040022 A040023 A040024 KEYWORD nonn,cofr,easy AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 23 19:37 EDT 2019. Contains 328373 sequences. (Running on oeis4.)