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, 0, 0, 0, 0, 0, 0, 0, 0, 720898, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^18 - 3*x^17 + 7*x^16 - 38*x^15 + 45*x^14 - 218*x^13 + 263*x^12 - 1533*x^11 + 3329*x^10 - 11520*x^9 - 3329*x^8 - 1533*x^7 - 263*x^6 - 218*x^5 - 45*x^4 - 38*x^3 - 7*x^2 - 3*x - 1) / (x^20 - 720898*x^10 + 1). - Colin Barker, Dec 25 2013
a(n) = 720898*a(n-10) - a(n-20) for n > 19. - Vincenzo Librandi, Feb 01 2014
MATHEMATICA
Denominator[Convergents[Sqrt[979], 30]] (* Vincenzo Librandi, Feb 01 2014 *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 25 2013
STATUS
approved