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, 23550, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^18 -2*x^17 +3*x^16 -5*x^15 +8*x^14 -53*x^13 +61*x^12 -114*x^11 +175*x^10 -464*x^9 -175*x^8 -114*x^7 -61*x^6 -53*x^5 -8*x^4 -5*x^3 -3*x^2 -2*x -1) / (x^20 -23550*x^10 +1). - Colin Barker, Dec 05 2013
MATHEMATICA
Denominator[Convergents[Sqrt[644], 30]] (* Vincenzo Librandi, Jan 18 2014_ *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 05 2013
STATUS
approved