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, 0, 0, 0, 0, 0, 0, 136244, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^18 -x^17 +3*x^16 -4*x^15 +11*x^14 -257*x^13 +525*x^12 -782*x^11 +2089*x^10 -2871*x^9 -2089*x^8 -782*x^7 -525*x^6 -257*x^5 -11*x^4 -4*x^3 -3*x^2 -x -1) / (x^20 -136244*x^10 +1). - Colin Barker, Dec 01 2013
a(n) = 136244*a(n-10) - a(n-20) for n>19. - Vincenzo Librandi, Jan 14 2014
MATHEMATICA
Denominator[Convergents[Sqrt[563], 30]] (* Vincenzo Librandi, Jan 14 2014 *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 01 2013
STATUS
approved