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, 314, 0, 0, 1).
FORMULA
G.f.: (31 +63*x +157*x^2 +63*x^3 -31*x^4 +x^5)/(1 -314*x^3 -x^6). - Vincenzo Librandi, Dec 09 2013, simplified by Colin Barker, Dec 25 2013
a(n) = 314*a(n-3) + a(n-6). - Vincenzo Librandi, Dec 09 2013, simplified by Colin Barker, Dec 26 2013
MATHEMATICA
Numerator[Convergents[Sqrt[986], 30]] (* or *) CoefficientList[Series[(31 + 63 x + 157 x^2 + 63 x^3 - 31 x^4 + x^5)/(1 - 314 x^3 - x^6), {x, 0, 30}], x] (* Vincenzo Librandi, Dec 09 2013 *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Dec 09 2013
STATUS
approved