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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A041429 Denominators of continued fraction convergents to sqrt(230). 2
 1, 6, 181, 1092, 32941, 198738, 5995081, 36169224, 1091071801, 6582600030, 198569072701, 1197997036236, 36138480159781, 218028877994922, 6577004820007441, 39680057798039568, 1196978738761194481, 7221552490365206454, 217843553449717388101 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 Index entries for linear recurrences with constant coefficients, signature (0, 182, 0, -1). FORMULA G.f.: -(x^2-6*x-1) / (x^4-182*x^2+1). - Colin Barker, Nov 17 2013 a(n) = 182*a(n-2) - a(n-4). - Vincenzo Librandi, Dec 17 2013 MATHEMATICA Denominator[Convergents[Sqrt[230], 30]] (* Vincenzo Librandi, Dec 17 2013 *) PROG (Magma) I:=[1, 6, 181, 1092]; [n le 4 select I[n] else 182*Self(n-2)-Self(n-4): n in [1..100]]; // Vincenzo Librandi, Dec 17 2013 CROSSREFS Cf. A041428, A040214, A176909. Sequence in context: A051357 A251671 A064120 * A089905 A222887 A012208 Adjacent sequences: A041426 A041427 A041428 * A041430 A041431 A041432 KEYWORD nonn,frac,easy AUTHOR EXTENSIONS More terms from Colin Barker, Nov 17 2013 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.

Last modified January 27 10:15 EST 2023. Contains 359838 sequences. (Running on oeis4.)