OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,182,0,-1).
FORMULA
G.f.: -(x^3 -15*x^2 -91*x -15)/(x^4 -182*x^2 +1). - Vincenzo Librandi, Nov 02 2013
a(n) = 182*a(n-2) - a(n-4). - Wesley Ivan Hurt, May 04 2024
MATHEMATICA
Numerator[Convergents[Sqrt[230], 20]] (* Harvey P. Dale, Jun 12 2012 *)
CoefficientList[Series[-(x^3 - 15 x^2 - 91 x - 15)/(x^4 -182 x^2 + 1), {x, 0, 30}], x] (* Vincenzo Librandi, Nov 02 2013 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
STATUS
approved