login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A040166 Continued fraction for sqrt(180). 1
13, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2, 26, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
a(n)=(1/3)*{-14*(n mod 4)+4*[(n+1) mod 4]+4*[(n+2) mod 4]+22*[(n+3) mod 4]}-13*[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava, Jun 10 2009]
MAPLE
Digits := 100: convert(evalf(sqrt(N)), confrac, 90, 'cvgts'):
MATHEMATICA
ContinuedFraction[Sqrt[180], 300] (* Vladimir Joseph Stephan Orlovsky, Mar 26 2011*)
PadRight[{13}, 100, {26, 2, 2, 2}] (* Harvey P. Dale, Sep 13 2014 *)
CROSSREFS
Sequence in context: A010222 A086266 A217436 * A100395 A051310 A010224
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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 22 03:20 EDT 2023. Contains 365503 sequences. (Running on oeis4.)