OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 484, 0, 0, 0, -1).
FORMULA
G.f.: -(x^2-x-1)*(x^4+9*x^2+1) / (x^8-484*x^4+1). - Colin Barker, Dec 10 2013
MATHEMATICA
Denominator[Convergents[Sqrt[723], 30]] (* Harvey P. Dale, May 01 2013 *)
CoefficientList[Series[(1 + x - x^2) (x^4 + 9 x^2 + 1)/(x^8 - 484 x^4 + 1), {x, 0, 30}], x] (* Vincenzo Librandi, Jan 21 2014 *)
PROG
(Magma) I:=[1, 1, 8, 9, 476, 485, 3871, 4356]; [n le 8 select I[n] else 484*Self(n-4)-Self(n-8): n in [1..30]]; // Vincenzo Librandi, Jan 21 2014
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 10 2013
STATUS
approved