The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A041238 Numerators of continued fraction convergents to sqrt(131). 2
 11, 23, 103, 1156, 4727, 10610, 238147, 486904, 2185763, 24530297, 100306951, 225144199, 5053479329, 10332102857, 46381890757, 520532901184, 2128513495493, 4777559892170, 107234831123233 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,21220,0,0,0,0,0,-1). FORMULA a(n) = 21220*a(n-6)-a(n-12). G.f.: -(x^11 -11*x^10 +23*x^9 -103*x^8 +1156*x^7 -4727*x^6 -10610*x^5 -4727*x^4 -1156*x^3 -103*x^2 -23*x -11) / (x^12-21220*x^6+1). [Colin Barker, Jul 19 2012] MATHEMATICA Numerator[Convergents[Sqrt[131], 25]] (* Vincenzo Librandi, Oct 27 2013 *) CROSSREFS Cf. A041239. Sequence in context: A092558 A294255 A088777 * A089779 A146084 A179520 Adjacent sequences:  A041235 A041236 A041237 * A041239 A041240 A041241 KEYWORD nonn,cofr,frac,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 August 12 21:10 EDT 2020. Contains 336440 sequences. (Running on oeis4.)